人教版八年级英语上册Unit2：How often do you exercise知识点汇集
Unit2 How often do you exercise?
一．短语
1.help with housework帮助做家务on weekends在周末how often多久一次
2.hardly ever几乎从不once a week每周一次twice a month每月两次
3.every day每天be free有空go to the movies去看电影
https://www.wendangku.net/doc/e92013617.html,e the Internet用互联网swing dance摇摆舞play tennis打网球5．stay up late熬夜；睡得很晚at least至少be good with与……友好相处
6.have dance and piano lessons上舞蹈课和钢琴课go to bed early早点睡觉
7.play sports进行体育活动sb. spend time with sb.和某人一起度过时光
8.be bad for对……有坏处be good for对……有好处
9.sb. spend time / money on sth.在某方面花费时间/金钱
10.sb. spend time /money (in) doing sth.在做某事上花费时间/金钱
11.be good at sth./ doing sth 擅长某事/做某事
12.be friendly with sb. 与某人友好相处be friendly to sb. 对某人友好
13.be kind to sb. 对某人友好go camping去野营
14.not…at all一点儿也不……in one’s free time在某人的业余时间
15.the most popular最受欢迎的such as比如；诸如
16.old habits die hard积习难改go to the dentist去看牙医
17.morn than多于；超过less than少于
18.help sb. with sth=help sb (to) do sth.帮助某人做某事
19.How about…? =what about …？+动词ing .....怎么样？/ …好不好？
20.want sb. to do sth.想让某人做某事
21.How many+可数名词复数+一般疑问句？……有多少……?
22.主语+find+that从句. ……发现……
23.It’s+ adj.+ to do sth. 做某事的……的。
24.ask sb. about sth.向某人询问某事ask sb. to do sth.要求某人做某事
25.by doing sth. 通过做某事the best way to do sth.做某事的最好方式25. What’s your favorite…?你最喜爱的…是什么？
=Which…do you like best? 你最喜欢…?
二．词语辨析：
1. how often多久一次，用来提问动作发生的频率。回答用：once，twice,
three times 等词语。
Eg:How often do you play sports? Three times a week.
2. how long多长，用来询问多长时间，也可询问某物有多长。
Eg:How long does it take to get to Shanghai from here?
How long is the ruler?
3. how far 多远，用来询问距离，指路程的远近。
Eg : How far is it from here to the park? ---It’s about 2 kilometers.
4. (1)free空闲的，有空的，反义词为busy.
be free= have time. 有空，闲着
eg:I’ll be free next week. = I’ll have time next week.
(2)free还可作“免费的、自由的”解。
be free to do sth. 自由地做某事。
:egThe tickets are free. You’re free to go or to stay.
5. How come？怎么会？怎么回事？表示某件事情很奇怪，有点想不
通；可单独使用，也可引导一个问句，相当于疑问句why, 但how come 开头的特殊疑问句使用的仍然是陈述语序。
eg:How come Tom didn’t come to the party?
= Why didn’t Tom come to the party?
6. (1)stay up late指“熬夜到很晚，迟睡”。Don’t stay up late next time.
7. (2)stay up指“熬夜，不睡觉”. He stayed up all night to write his story.
8. (1)go to bed 强调“上床睡觉”的动作及过程，但人不一定睡着。
Eg:I went to bed at eleven last night.
(2)go to sleep强调“入睡，睡着，进入梦乡”。
Eg: She was so tired that she went to sleep soon.
9. find + 宾语+名词, 发现：We have found him (to be) a good
find + 宾语+ 形容词，发现：He found the room dirty.
find + 宾语+ 现在分词，发现：I found her standing at the door.
10. percent 百分数，基数词+ percent：percent 没有复数形式，作
主语时，根据所修饰的名词来判断谓语的单复数。Forty percent of the students in our class are girls. Thirty percent of time passed.
11. more than超过，多于，不仅仅，相当于over. 在句型转换中考查
两者的同义替换。反义词组为：less than.
Eg: I lived in Shanghai for more than / over ten years.
12. afraid 形容词，担心的，害怕的，在句中作表语，不用在名词前作
定语。
I’m afraid we can’t come here on time.
(1)be afraid of sb / sth 害怕某人/ 某事；
(2)be afraid of doing sth. 害怕做某事。
Some children are afraid of snakes.
Don’t be afraid of asking questions.
(3)I’m afraid + 从句，恐怕，担心：I’m afraid I have to go now.
(4)be afraid to do sth 害怕做某事
13. sometimes , sometime, some times , some time 的区别：
(1)sometimes 频度副词，有时。表示动作发生的不经常性，多与
一般现在时连用，可位于句首、句中或句末。
Eg: Sometimes I get up very early. ------How often do you get up?
(2)sometime 副词，某个时候。表示不确切或不具体的时间，常
用于过去时或将来时，对它用疑问词when.
------When will you go to Shanghai next week?
(3)some times 名词词组，几次，几倍。其中time 是可数名词，
对它提问用how many times.
------How many times have you read the story?
(4)some time名词短语，一段时间. 表示“一段时间”时，句中谓
语动词常为延续性动词，提问时用How long.
Eg: How long will you stay here? ----- I ‘ll stay here for some time.