it的用法和练习(带答案)
重点代词it的用法和练习（含答案）
(1)it用做人称代词的用法
it用作代词，意为“它”，既可以指人，也可以指物。it做人称代词，可以用来代替一个名词、短语、从句或句子，以避免他们在句中的重复。这是可以指提到过的，也可以指未提到的，在句中做主语、表语和宾语。
1)指事物，it可以知道除人以外的任何事物或动物。
I dropped my watch and it broke.我把手表掉在地上摔坏了。
2)指人，it主用用于指性别不明的婴儿或只听其声不见其人的人，如：
Is it a boy or a girl?是男孩还是女孩？
There is a knock on the door. It must be the postman.
“Listen. Someone is crying..”“Oh, it must be Mary.”
3）代替某些代词。
代词it可以用于代替指示代词this, that以及复合不定代词something, anythi ng, nothing等，如：
“What’s this?”“It’s a new machine”
(2)it用作非人称代词的用法
1)it用作非人称代词主要用来指时间、距离、价值、天气、气温及温度等自
然现象。如
It’s too late to go there now.现在去那已经太迟了。
It rained all day yesterday.昨天下了一整天雨。
2)用于某些句型。
It’s time for sth. 该做某事了。
It’s to do sth. 是时候该做某事了。
It’s time for sb to do sth. 某人该干某事了。
It’s (about/high) time +that--从句。某人该做某事了。（从句谓语用过去式，有时候用should+动词原形）
It’s first(second)time +that--从句。某人第几次干某事。（从句谓语动词用现在完成时）
It’s +时间段+since从句。自从…以来有一段时间了。
It’s +时间段+before 从句。过多长时间才…
(3)it用作形式主语的用法。
1)当不定式、动名词、从句等复杂成分做句子主语时，为保持句子的平衡，
通常把真正的主语放在句末，而句首使用形式主语it。如
It’s very important to remember this.
It’s hard work climbing mountains.
It’s unknown when he will come.
2)it用作形式主语的重要句型。
①It+be+adj.+for(of)sb to do sth. 某人做某事…
It is hard for him to make up his mind.他很难下定决心。
It was foolish of her to say such a thing.她说那样的话，太愚蠢了。
提示：此句型中的介词of和for的区别是：of用于指某人的性格，属性，特征等。介词for表示对象，意为“对…来说”。
②It takes/took sb+时间段+to do sth.某人做某事花了…时间。
It took me two hours to finish my homework.
③It is up to sb to do sth.该由某人做某事了。
It’s up to you to make the choice.该由你来做选择了。
④It looks(seems,appears,happens,occurs) that (as if) …似乎…
It seems as though he didn’t recognize me.
(4)it用作形式宾语的用法。
1)当不定式、动名词、从句等复杂成分用作宾语且后面跟有宾语补足语时，
通常会在宾语补足语前使用it作形式宾语，而将真正的宾语移至句末。其基本结构为“动词+it+宾语补足语+不定式（动名词或从句）”
I find it difficult to do the job well.
I think it best that you should stay here.
We think it no use complaining.
2)用作形式宾语的几个特殊结构：
①动词+it+that-从句
I think it (that) he will come on time.
②动词+it+when(if)-从句
We rally appreciate it when she offered to help.
③动词+prep.+it+that-从句
I can’t answer for it that he will come.我不能保证他会来。
④动词+it+介词短语+that-从句
I took it for granted that he would help us.
(5)it在强调句中的用法。
强调句的基本结构是：It+be+被强调部分+that(who)+其他部分。
It was a computer that he bought last week.
练习部分
1. I like in the autumn when the weather is clear and bright. A. th is B. that C. it D. one
[解析] C.句中like为及物动词,后面需要跟宾语.而like之后不可直接接从句作宾语.it可用于某些动词(hate, appreciate…)和介词之后作笼统宾语.
2. He was nearly drowned once.
When was ?
was in 1998 when he was in middle school.
A. that; It
B. this; This
C. this; It
D. that; This
[解析]A. 第一空用that指代上文提到的事情; 第二空用it指代第一空的that
3. The Parkers bought a new house but will need a lot of work be fore they can move in.
A. they
B. it
C. one
D. which
[解析] B此处it指代前面出现的a new house. it指代上文提到的同一事物,为特指;而one通常指代同类事物中的某一个.
4. Someone is ringing the doorbell. Go and see .
A. who is he
B. who he is
C. who is it
D. who it is
[解析] D此处it用作人称代词,指不明身份,性别的人;宾语从句应用陈述语序.
5. In fact is a hard job for the police to keep order in an importa nt football match.
A. this
B. that
C. there
D. It
[解析] D此处it用作形式主语.
6. Mike’s mother kept telling him that he should work hard, but did n’t help.
A. he
B. it
C. she
D. which
[解析] B此处it用以指代前面的句子,可用that替换.
7. Since you have repaired my computer, is no need for me to bu y a new one.
A. it
B. there
C. this
D. that
[解析] B考查固定句型There is no need for sb to do sth
8. The official made clear that he would do everything possible to s olve the problem.
A. it
B. this
C. that
D. him
[解析] A此处it用作形式宾语.
9. Do you like here?
Oh, yes, the air, the weather and the way of life. Everything is so nic e.
A. this
B. there
C. that
D. it
[解析] D此处it泛指自然环境.
10. Bill’s aim is to inform the viewers that cigarette advertising in TV is illegal, ?
A. isn’t it
B. is it
C. isn’t he
D. is he
[解析]A主语为“Bill’s aim”.
11. is mentioned above, the number of the students in senior high school is increasing.
A. which
B. As
C. That
D. It
[解析] B非限制性定语从句中, as /which均可指代整句话的内容,但which 只能放在主句后,译为“这一点”; as则位置灵活,译为“正如”.
12. It was with great joy he received the news that his lost daught er had been found.
A. because
B. which
C. since
D. that
[解析] D考查强调句型.
13. It was back home after the experiment.
A. not until midnight did he go
B. until midnight that he didn’t go
C. not until midnight that he went
D. until midnight when he didn’t go [解析] C考查not until结构强调句型.
14. Why! I have nothing to confess. You want me to say?
A. What is it that
B. What it is that
C. How is it that
D. How it is that
[解析] A考查强调句型的特殊疑问句句式.
15. It is the ability to do the job matters not where you come fro m or what you are.
A. one
B. that
C. what
D. it
[解析] B考查强调句型.被强调部分是not where you come from or what y ou are (but ) the ability to do the job.为了平衡结构,部分移至句尾
1. （据报道）a lot of people lost their jobs in the city last month.(report)
2. （据报道）, a lot of people lost their jobs in the city last month.(report)
3. （毫无疑问）he will be admitted to the key univer sity.(doubt)
4. He has made some great movies. （这一点是毫无疑问的）.(doubt)
5. （没必要）for you to get up early tomorrow.(need)
6. （碰巧）I had been away when he called.(happen)
7. （看来）nobody knows what has happened.(seem)
8. （看起来似乎）it's going to rain.(look)
9. （很可能）the thieves don’t know how much it is w orth.(likely)
10. （我也许可以）to leave a message for her.(possible)
1. It’s repo rted that
2. As is reported
3. There is no doubt that
4. T here is no doubt about it
5. There is no need
6. It happened tha t
7. It seems that
8. It looks as if
9. It’s likely that 10.It’s possib le for me
11. It’s no use （为打翻的牛奶而哭泣）.(cry)
12. （抱怨是毫无用处的）, they never listen.(use)
13. （难怪）you’ve achieved so much success.(wonder)
14. (很明确）most of the farmers have brought in m ore money by all means.(certain)
15. （据说）the professor has already succeeded in car rying out this experiment.(say)
16. The professor is said 已成功）in carrying out this experiment.(succeed)（比较句型15）
17. （感到遗憾）I haven’t been to the get-together.(pity)
18 （使之成为一种惯例）that I get up at six every da y in the morning.(rule)
19. I （认为有必要）to take plenty of hot water ever y day.(think)
20. It’s high time that we （采取措施）to stop pol lution.(take)
11. crying over spi lt milk 12. It’s/There is no use complaining
13. It’s no wonder that
14. It’s certain that 15. It’s said that 16. to have succeeded 17.
I feel it a pity that
18. I have made it a rule 19. think it (is) necessary 20. to ok/should take measures
21. （要花费她很长时间）to recover from the illness. (take)
22. This/It is the third time that I （看那部电影）.（s ee）
23. It was the first time that she （到长城）.（be）
24. It is / has been two years （自从他出国）.（go）
25. （对你没什么差别）whether I like it or not，becaus
e you never listen to me.（make）
26. （用不了多久）before we know the result of the ex periment.（be）
27. Measures have been taken to solve the problem，but
（可能要过段时间）before the situation improves.（some）
28. （没关系）the weather was bad.（matter）
29. （是否要紧）whether we go together or separatel y?（matter）
30. （我突然想起）that he might have forgotten our date.（occur）
21. It will take her a long time 22. have seen the film 23. had be en to the Great wall
24. since he went abroad 25. It makes no difference to you
26. It won’t be long
27. it may be some time 28. It didn’t matter that 29. Does it matter
30. It occurred to me
31. （可能性不大）he will change his mind.（chance）
32. （很可能）we will go to Beijing.（chance）
33. （似乎有）hundreds of people in the field；it was q uite full.（seem）
34. 曾经有）a church at the corner of the street.（be）
35. She （阐明清楚）she had nothing to do with th
e decision.（make）
36. I （确定）everything is ready.（see）
37. What a pity my new computer doesn’t work.（一定有什么问题）with it.（wrong）
38. （结果）she was a friend of my sister.（turn）
39. Come and see me when （你方便的时候）.（con venient）
40. （没多大意义）complaining . It doesn’t make differ ence.（point）
31.There is little chance that
32. There is a good/high chance that/There are chances that/Chances are t hat 33. There seemed to be 34. There used to be
35. made it clear that 36. will see (to it) that
37. There must be something wrong 38. It turned out that
39. i t’s convenient to/for you 40. There is not much point (in)
英语语法专项：动名词用法讲解及练习(附答案)
你听过英文语法有动词(verb)、名词(noun)；但你听过有动名词(gerund)吗？ 1. The girl is singing a song. 2. The girl singing now is my sister. 3. Singing is one of her hobbies(爱好). 三个句子中都有singing。第一个句子的singing是常见的现在进行式(Present Continuous)，是说眼下正在做什么；第二个句子的singing是现在分词(Present Participle)，它把sing这个动词转为形容词，但仍有动词的成份（哈哈，这么一说，要把你搞晕了吧:-) 。关于分词，以后有空再谈OK？）。好戏在后头，你看看第三个句子的singing到底是什么东东呀？原来就是我们的主角动名词(Gerund)了！憧矗瑂ing原本是个动词，可是现在它加上ing后，看来竟像是一个名词了。 一、名词性的动名词(Nominal Gerund) Nominal Gerund 可以加上定冠词(Definite article，如the)或不定冠词(Indefinite article，如a, an)，其他可加在动名词前的还有如：my, this, some, any, all, no 等等。举例如下： 1. The mellow(愉快地) singing of the birds announces the coming of spring. (singing前加定冠词the及形容词mellow；coming 前加the) 2. We knew the robber was near when we heard a faint rustling(沙沙声) in the bushes. (rustling 前加不定冠词a及形容词faint) 从上面的例子可看出如何将一个动词转成名词；但它和真正的名词还是有区别的，那就是没有单数或复数之分。不过，有一些动名词是可以变成真正名词的喔，如：saying, writing, opening, painting, cutting, heading, feeling, being,saving, surrounding, crossing, misunderstanding 等等。它们都可以有复数的喔，方法就是在它们的后面加个s，如：paintings。 二、动词性的动名词(Verbal Gerund) 看看下面的句子： Carelessly writing essays annoys the teacher. 上面的句子里的writing是动名词，但前面有副词carelessly（粗心地），后面又有受词(Object) essays。因此writing就有动词的特征。 注意：Verbal Gerund 这类动名词的前面可不能加上任何冠词(the, a, an ...)喔。 动名词的功能与用法 一、在句子中用作主语(Subject)或主语的补语(Subject Complement): 1.1 作主语 1. Listening to music gives me pleasure. (主语Listening ） 2. Running is good exercise. （主语running) 3. Walking to school is a good idea. (主语walking) 1.2 作主语的补语 1. My cat's favorite activity is sleeping. (补语sleeping) 2. Seeing is believing. (主语seeing, 补语believing) 1.3 主语置于句尾 1.3.1 用It + be + ... +v-ing 句型 1. It is fun speaking English. 2. It is of great importance fighting against pollution(污染).
It作形式主语
It作形式主语和形式宾语，虽然是我们高中就学过的语法点，但在考研英语题型中，无论是在阅读还是翻译，常会考查该知识点。 一.it作形式主语。 英语中不定式、动名词、主语从句在作主语时主语往往显得很长，使整个句子看上去有点头重脚轻，这样就借助“it”来作形式上的主语，而把真正的主语移到句子后边去，使全句结构上前后平衡。“it”并无实际意义。It之后的谓语部分，可以是be+形容词，be+名词(词组)，或be+过去分词等。 it 作形式主语，主要分为下列三种情况：不定式作主语、动名词作主语和名词从句作主语。具体分析如下： 一、不定式作真正主语主要用于下列句型： 1. It + is/was + adj./n.+ to do sth. A.名词作表语。主要有a pity, a pleasure, an idea等。 It is a good idea to think this way. 这样考虑问题是个好办法 除be外，其他动词也有跟名词的情况。例如： It seems a pity to waste the food. 浪费这些食物真可惜。 B. 形容词或形容词短语作表语。分两种情况： 1.下列形容词；kind,good,nice,clever,wrong,right,foolish,wise,unwise,stupid,rude,careless,cruel,brave ,naughty,polite,selfish等词作表语时，不定式前常可加一个由of引起的短语，来说明不定式指的是谁的情况。形容词表示不定式逻辑主语的特征，即形容词用来描述不定式行为者的性格、品行等。例如： It was foolish of you to leave school.你中途退学，真是傻瓜。 2. 其他形容词作表语，常见的形容词有：necessary, hard，important, difficult, easy, possible，common等。 It is necessary to learn English. 需要注意的是：动词不定式作主语，一般情况下用it作形式主语，而把动词不定式（从句）放在后面。也可以直接用不定式作主语。例如： It is wrong to tell lies. = To tell lies is wrong. 撒谎是不对的。 但在疑问句和感叹句中，只能用it作形式主语。例如：
C语言函数手册(DOC)
一、字符测试函数 isupper()测试字符是否为大写英文字 ispunct()测试字符是否为标点符号或特殊符号isspace()测试字符是否为空格字符 isprint()测试字符是否为可打印字符 islower()测试字符是否为小写字母 isgraphis()测试字符是否为可打印字符 isdigit()测试字符是否为阿拉伯数字 iscntrl()测试字符是否为ASCII码的控制字符isascii()测试字符是否为ASCII码字符 isalpha()测试字符是否为英文字母 isalnum()测试字符是否为英文或数字 isxdigit()测试字符是否为16进制数字 二、字符串操作函数 strtok()字符串分割函数 strstr()字符串查找函数 strspn()字符查找函数 strrchr()定位字符串中最后出现的指定字符 strpbrk()定位字符串中第一个出现的指定字符strncpy()复制字符串 strncat()字符串连接函数 strncasecmp()字符串比较函数(忽略大小写) strlen()字符串长度计算函数 strdup()复制字符串 strcspn()查找字符串 strcpy()复制字符串 strcoll()字符串比较函数(按字符排列次序) strcmp()字符串比较函数(比较字符串) strchr()字符串查找函数(返回首次出现字符的位置) strcat()连接字符串 strcasecmp()字符串比较函数(忽略大小写比较字符串) rindex()字符串查找函数(返回最后一次出现的位置) index()字符串查找函数(返回首次出现的位置) toupper()字符串转换函数(小写转大写) tolower()字符串转换函数(大写转小写) toascii()将整数转换成合法的ASCII码字符 strtoul()将字符串转换成无符号长整型数
(完整版)初中it用法练习题
---------------------------------------------------------------最新资料推荐------------------------------------------------------ 初中it用法练习题 初中 it 用法练习题在英语中,it 有许多不同的用法,它既可以用作代词，也可以用作引导词，还可以用来构成强调句型。 1. it 用作代词用作人称代词在句子中作主语或宾语；指前面已经提到过的事物、动物或人，且 it 指特定的事物；如果指前文中提到的事物中的任何一个，用 one。 one 可以与 any, each, every, not 等连用，但 one 不可代替不可数名词。 Wheres your car? Its in the garage. 你的汽车在哪儿呢？在车库里。 Did you hit it? 你打中了吗？ The baby cried when it was hungry.这婴儿饿时就哭。 Who is that? Its me. 是谁？我。 Whats this? Its a box. 这是什么？一只箱子。 作非人称代词表示天气、日期、时间、温度、距离、价值、路程、度量、自然现象与环境等。 也可模糊地指一般情形或上文的部分或整个意思。 译成汉语时，it 通常不一定译出来。 Its a long time since they left. 他们走后很久了。 Its two miles to the beach.离海滨有两英里远。 Thats just itI cant work when youre making so much 1/ 24
商务写作指南：超好记的appreciate的用法
WRONG: We would appreciate if you corrected the entry in the register as soon as possible. 错误用法：如果你能尽快更改登记处的入口，我将非常感激。 RIGHT: We would appreciate it if you corrected the entry in the register as soon as possible. 正确用法：如果你能尽快更改登记处的入口，我将非常感激（英语原句比前者多了一个it）。This is a very common mistake, and remember that when you use the phrase “I would appreciat e…”you MUST include the word “it”before “if”: 这是一个常见错误，记住当你要用“I would appreciate…”这个表达式时，一定要在if前加一个it。 More examples: 更多例子： E.g.1:I am sure the supervisory authority would not appreciate it if you took that course of action. 例1：我相信监督部门对你的所作所为不会表示欣赏。 E.g.2:We would appreciate it if you would arrange for immediate payment. 例2：如果您能立即付款，我们将很感激。 There is no need to add “it”if you do not include “if”. 如果你不用if从句的话，就没有必要在appreciate后面加it了。 E.g.: We would much appreciate a letter informing us of the result of your enquiries. 例句：如果您能对您的询盘结果给我们回信的话，我们将非常感激。 An alternative phrase to “I would appreciate it if…”is, “I would be grateful if…”This is the more formal phrase of the two and does not require that troublesome“it”! “I would appreciate it if…”这个表达式的替代用法有“I would be grateful if…”，但是这个用法更为正式，而且不需要加那个麻烦的“it”！
It”作形式主语和形式宾语用法详解
新希望英语语法精讲------“I t”作形式主语和形式宾语“It”作形式主语和形式宾语的用法详解 It作形式主语和形式宾语用法，是英语学习的主要语法项目之一。无论是单项选择，还是完行填空，it用法始终是反复考查的重、热点之一。现将it在特殊句型中作形式主语和形式宾语用法，进行如下归纳分析，以供学习参考。一、 It 用作形式主语当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。此时it只起先行引导作用，本身无词义。 e.g. It is wrong to tell a lie. (说谎是错误的。) 〔It为to tell a lie 的形式主语〕 It is no use arguing about it. (争吵是没用的。) 〔It为arguing about it的形式主语〕 It is uncertain who will come. (谁要来还不确定。) 〔It为who will come 的形式主语〕 It 作形式主语的常见句型： ① It + be + 形容词 + to do sth. / doing / that …. e.g. It is very important to learn a foreign language. (学一门外语非常重要。) It is useless crying over the spilt milk. (覆水难收。)
It was really surprising that she married a man like that.(她嫁给那样的男士真让人惊讶。) ② It + be +名词词组 + doing / that …. e.g. It is no good telling lies. (撒谎没好处。) It is a pity that you didn’t go to see the film yesterday. (你昨天没看成那部电影真遗憾。) It is a truth that there would be no new China without the Communist Party. (没有共产党就没有新中国，这是毋庸质疑的。) ③ It + be + 过去分词 + that …. 该句型常见动词有：say, hope, think, suppose, expect, report, know, believe, decide, etc. e.g. It is said that they have invented a new type of computer. (据说他们发明了一种新型电脑。) It is believed that China will become one of the strongest countries in the world. (大家都相信中国将会步入世界强国之列。) It was reported that more than 170 thousand people died in the 2004 tsunami. (据报道，至少有十七万人在2004年那场海啸中丧生。) ④ It + seems / appears / happens等不及物动词 + that ….
输入和输出函数的区别
输入输出函数区别如下： 一、printf 、sprintf、fprintf的区别 1.1 都是把格式好的字符串输出，只是输出的目标不一样： 1）、printf，是把格式字符串输出到标准输出(一般是屏幕、控制台，可以重定向),是和标准输出文件(stdout)关联的; 原型为: int printf(const char *format[,argument]...); 2）、sprintf，是把格式字符串输出到指定的字符串中，所以参数比printf多一个char*。这是目标字符串地址； 原型为：int sprintf(char *buffer,const char *format[,argument]...); 3）、fprintf，是把格式字符串输出到指定文件设备中，fprintf是格式化输出到一个stream，通常是到文件，所以参数比printf多一个文件指针FILE*; 原型为：int fprintf(FILE *stream,const char *format[,argument]...); 1.2. Fprintf c语言把文件看作一个字符(字节)的序列，即由一个一个字符(字节)的数据顺序组成。根据数据的组成形式，可分为ASCLL文件和二进制文件。ASCLL文件又称为文本文件(text)，它的每个字节放一个ASCLL代码，代表一个字符。二进制文件是内存中的数据按其在内在中的存储形式原样输出到磁盘上存放。 1）.fprintf（fp,"%d",buffer）;是将格式化的数据写入文件； fprintf(文件指针，格式字符串，输出表列); fwrite(&buffer,sizeof(int),1,fp); 是以二进位方式写入文件 fwrite(数据，数据类型大小（字节数），写入数据的最大数据，文件指针); 由于fprintf写入是，对于整数来说，一位站一个字节， 比如1，占1个字节； 10，占2个字节； 100，占3个字节； 10000，占5个字节；所以文件的大小会随数据的大小而改变，对大数据空间占用很大。而fwrite是按二进制写入，所以写入数据所占空间是根据数据类型来确定，比如int的大小为4个字节(一般32位下)，那么整数10所占空间为4个字节，100/10000所占空间也是4个字节，所以二进制写入比格式化写入更省空间。因此， 对于1 2 3 4 5 6 7 8 9 0 十个整数，用fprintf写入时，占10个字节；而用fwrite写入时，占40个字节。 对于100 101 102 103 104 105 106 107 108 109 110 这十个整数，用fprintf写入时，占30个字节；而用fwrite写入时，占40个字节。 对于10000 10100 10200 10300 10400 10500 10600 10700 10800 10900 1 1000 这十个整数，用fprintf写入时，占50个字节；而用fwrite写入时，还是
it用法专项练习题
it用法专练 一．替代词it, that, (the) one(s), those的用法辨析 1. The award on the left is more beautiful than _______ on the right. A the one B one C it D this 2. Few pleasures can equal ________of a cool drink on a hot day. A. some B. any C. that D. those 3. The hunter’s younger sister is taller than the elder ___. A the one B one C that D this 4. I need the plastic bags, not the paper______ . A the one B ones C that D this 5. The TV sets made in China are much better than ________ in Japan. A．that B．those C．them D．It 6. Listen to________! We will have three days off. A the one B ones C that D this 7. “A penny saved is a penny earned.” Who said_________? A the one B ones C that D this 8. I bought a dictionary three years ago and I am still using______ now. A one B ones C it D this 9. I bought a dictionary three years ago but I am going to buy a new _______soon. A one B ones C it D this 10. I was disappointed with the film. I had expected____ to be much better. A.that B. this C. one D .it 11 Equipped with modern facilities, today's libraries differ greatly from______. A. those of the past B. the past C. which of the past D. these past 12.My most famous relative of all, ___who really left his mark on America,wasReb Sussel,my great-grandfather. A. one B. the one C. he D. someone 13. He has one blue pen and two red ________. A. one B. those C. one's D. ones 14. Cars do cause us some health problems —in fact far more serious than_____ mobile phones do. A. one B. ones C. it D. those 15. Cook was a strict but good captain, ______ who took good care of the sailors on his ship. A. that B. one C. it D. what 16. Mr Zhang gave the text books to all the pupils except____who had already taken them. A.these B.ones C.the ones D.the others 17. —— I'm looking for a flat. —— Would you like ____ with ____ garden? A．it; the B．it; a C．one; a D．one; the 18.Meeting my uncle after all these years was an unforgettable moment, ___I will always treasure. A.that B.one C.it D.what 19. The style of the building is similar to _________of a temple. A.that B.one C.it D.what 20. The computers in our school are connected to the Internet while___in their school aren’t. A.that B.one C.it D.those 21.Our food and service are better than ________ used to be. A．it B．that C．they D．those 22.I’m moving to the countryside because the air there is much fresher than _____ in the city. A. ones B. one C. that D. those 23.We’ve been looking at houses but haven’t found _____we like yet.
appreciate表示感谢的用法
外教一对一https://www.wendangku.net/doc/d26131033.html, 用appreciate表示「感谢」，用对不容易 在邮件里表示「感谢」的时候，我们常常会用到appreciate一词;在比较正式的场合，你也会偶尔听到有英美人在口语中使用appreciate 来表示「感谢」的含义。本帖将教会大家如何用对appreciate一词。1)表示感谢的时候，appreciate的对象通常不是某人，而是某件事。 和动词thank不一样的地方在于：thank 后面常常是某人。比如：Thank you for doing sth。但是appreciate后面常常是某件事，比如：I really appreciate your help. 很感谢你的帮助。Your support is greatly appreciated. 很感谢你的支持。以上的两个例句，通常都用在帮助或者支持完成之后说。而下面的这句话，是我们邮件中最常用的句式：I would appreciate it if you paid in cash. 如果你用现金支付，我会非常感谢。这个邮件的高频句式其实很容易出错，注意以下三点：appreciate后面的it不能漏掉appreciate后面不能直接加you以上面的句子为例，主句里的would和从句里的paid使用了过去式，是为了让语气更加婉转，而非表达过去的含义。I will appreciate it if...do...这样的句式也正确。2)中文里可以「欣赏」某人的品质;appreciate也一样。 中文里「欣赏」一词有两层含义：领略欣赏。比如：欣赏一段音乐认为……好。比如：老板很欣赏他的才华。巧合的是，appreciate 也有这两层含义：领略欣赏。You can't fully appreciate foreign literature in translation. 看翻译作品很难欣赏到外国文学的精髓。认为……好。His talents are not fully appreciated in that company. 在那个公司，他的才能得到充分地赏识。丨There's no point buying him expensive wines - he doesn't appreciate them. 别给他买很贵的酒，他不懂得品赏。3)appreciate还有一层生僻的含义：增值 我们会在财经新闻里看到appreciate及其反义词depreciate，分别表示「增值」和「贬值」。Their investments have appreciated over the years. 他们的投资在几年间增值了。currency depreciation 货币贬值 文章来源：https://www.wendangku.net/doc/d26131033.html,
It作形式主语常见用法
It作形式主语常见句型 1.It + be +形容词+ that-从句 可用于此句型的形容词有: wonderful, true，good，right，wrong，（un）important，useless，surprising，disturbing,frightening,alarming,clear，unusual，lucky，certain, necessary等。如： ①It is quite certain that he will be at the meeting.他将出席会议是无疑的。 ②It is surprising that he came late to school this morning.他今天早上迟到真令人惊讶。 ③It is important that we (should) study hard.我们努力学习是很重要的。 注意: 该句型中的形容词是（un）important, necessary等时，从句应为(should )+动词原形。 It is important that we (should) learn English well. It is necessary that he (should) rember these words. 2.It + be +名词+ that-从句 适用该句型的名词（词组）有: a pity，an honor，a good thing，a fact，a surprise，a question,a shame,a custom, a truth,our hope, no wonder, good/bad manners等。如： ①It is a pity (that) you missed the sports meeting last week.你错过了上周的运动会太可惜了。 ②It is a fact that Engl ish is being accepted as an international language.事实上英语已经被作为一种国际语言而接受了。
sscanf,sscanf_s及其相关用法
sscanf，sscanf_s 及其相关用法 #include
(完整版)it的用法练习题
it的用法练习题（一） 1.It took us over an hour _____________along the street. A. walk B. to walk C. walking D. walked 2.I think it a great honor ________to visit your country. A. to invite B. inviting C. having invited D. to be invited 3.Many people now make_____________ a rule to buy cards for their friends before Christmas. A. themselves B. it C. that D. this 4._____is very clear to everyone that he's round and tall like a tree. A. This B. What C. That D. It 5.In the United States, bus travel doesn't cost much as train travel,_____________? A. don't they B. does it C. do they D. doesn't it 6.Someone is at the door, who is_____________? A. this B. that C .it D. he 7.—It is raining cats and dogs. —_____________ . A. So it is B. So is it C. Neither it is D. Neither is it 8.—My home is in that tall building over there. —_______________? A. Can it see B. Can see it C. Can be seen it D. Can it be seen 9. _____________raining hard for 3 hours without stopping. A. It is B. It was C. It has been D. It had been 10.—Has the boy got his bicycle now? —Yes, the police gave_____________. A. him to him B. it to it C. it to him D. him to it 11.—Boy, —It is, looks like spring is coming soon.
表语从句用法详解
表语从句用法详解(例句丰富) 一、表语从句的引导词 引导表语从句的词有连词that, whether，连接代词和连接副词，关系代词型what，以及as if, as though, because等连词。 1. 由that引导 The fact is that he doesn’t really try. 事实是他没有做真正的努力。 The trouble is that I have lost his address. 麻烦的是我把他的地址丢了。 My suggestion is that we should tell him. 我的建议是我们应该告诉他。 His sole requirement was (is) that the system work. 他唯一的要求是这个制度能起作用。 My idea is that we should start making preparations right now. 我的意见是我们马上就开始做准备工作。 2. 由whether引导 The question is whether the film is worth seeing. 问题是这部电影是否值得看。 【注意】whether 可引导表语从句，但与之同义的if却通常不用于引导表语从句。 3. 由连接代词引导 You are not who I thought you were. 你已不是我过去所想像的人。 The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。 The question is who (m) we should trust. 问题是我们应当相信谁。 What I want to know is which road we should take. 我想知道的是我们应走哪条路。 4. 由连接副词引导 The problem is how we can find him. 问题是我们如何找到他。 That was when I was fifteen. 这是我15岁时发生的事。 That’s where I first met her. 那就是我第一次遇见她的地方。 That’s why he didn’t come. 这就是他没有来的缘故。 That’s why I object to the plan. 这就是我反对这个计划的原因。 That’s where you are wrong. 这就是你不对的地方。
初中英语语法：it用作形式主语的用法
初中英语语法：it用作形式主语的用法 一、基本用法 当不定式、动名词、从句等用作主语时，避免头重脚轻，通常在句首使用形式主语it，而把真正的主语放在句子末尾： Is it necessary to tell his father everything? 有必要把这个切都告诉他父亲吗? It’s no good sitting up too late. 熬夜没有好处。 It is quite clear that he has read the book. 很显然，他读过这本书。 It doesn’t matter what he says. 他说什么没关系。 二、几种特殊的形式主语 (1) 用作动词look, seem, appear, happen, occur, follow等的主语(后接that从句或as if从句)： It seems as if it is going to rain. 看来要下雨了。 It seems that he knows everything. 他好像什么都知道。 It (so) happened that I had no money with me. 碰巧我没带钱。 From this witness it follows that he must be guilty. 根据该证人的证词判断，他一定有罪。 (2) 当系表结构后接有if 或when引出的状语从句时，通常在系表结构前使用形式主语表示说话人对某情况的看法： It was a great surprise to me when he did a thing like that. 他这样做使我很吃惊。
It的用法专题训练20题
It的用法专题训练20题 It的用法专题训练20题 湖南省涟源市私立行知中学曾省初 【典型例题】1. (NMET2001单项填空) The Parkers bought anew house but _____will need a lot of work before they can move in. A. they B. it C. one D. which 【思路点拨】B此题考查it 指代前面的a new house. 2.{MET93单项填空} Tom’mother kept telling him that he should work harder , but ____ didn’t help. A. he B. which C. she D. it 【思路点拨】D此题考查it 指代前面一句话，因有but,故which不能引导非限制性定语从句。 3.(NMET98，单项填空) It was only when I reread his poems recently ____I began to appreciate their beauty． A．until B．that C．then D．so
【思路点拨】B 此题考查强调句，所以用that 4.(MET 2000上海单项填空) It was how the young man had learned five foreign languages______ attracted the audience’s interest. A. so that B. that C. what D. in which 【思路点拨】B 此题考查强调句，所以用that 1. Was it during the Second World War_____ he died? A .that B .while C. in which D .then (88) 2. Is ____ necessary to complete the design before National Day? A. this B .that C. it D .he (89) 3. I don't think ____ possible to master a foreign language without much memory work. A .this B. that C .its D .it (91) 4 .Does ______ matter if he can't finish the job on time? A. this B .that C .he D it (91) 5 .It was not _____ she took off her glasses _____ I realized she was a famous film star. A .when , that B .until , that C .until , then D. when , then (92) 6.I was disappointed with the film . I had expected ______ to be much better. A. that B. this C. one D .it (93)
动名词的用法详解
动名词的用法详解 今天给大家带来动名词的用法详解，我们一起来学习吧，下面就和大家分享，来欣赏一下吧。 英语语法：动名词的用法详解 动名词因同时拥有动词和名词两者的特点而拥有及其丰富 的用法，熟练的掌握这些用法不仅可以使口语表达更地道生动，也能在写作中增分添彩。 动名词主要有四种用法，做主语，作宾语，作表语，作定语，每种用法下又分小类别，是一个非常复杂庞大的系统，学习者们往往会理不清脉络，今天就为大家带来动名词的用法讲解。 一.作主语 1.直接位于句首 eg.Swimming is a good sport in summer. 2.用it作形式主语，把动名词(真实主语)置于句尾作后置主语。 eg.It is no use telling him not to worry.
.mportant，essential，necessary等形容词不能用于上述结构。 3.用于“There be”结构中 eg.There is no saying when hell come. 4.动名词的复合结构作主语: 当动名词有自己的逻辑主语时，常可以在前面加上一个名词或代词的所有格，构成动名词的复合结构,动名词疑问句通常使用这种结构做主语 eg.Their coming to help was a great encouragement to us. Does your saying that mean anything to him? 二.作宾语 1.作动词的宾语 某些动词后出现非限定性动词时只能用动名词作宾语，不能用不定式。不定式通常指某种特定的动作，但动名词表示泛指，常见的此类动词有： admit,appreciate,excuse,stand,advise,allow,permit,avoid,consider,e njoy,finish,give up,cannot help,imagine,include,keep,understand,keepon,mind,report,risk,mis s,put off,delay,practise,resist,suggest,depend on,think about,set about,succeed in,worry about,burst out,insist on,feel like,be used
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