if引导的条件状语从句讲解和练习(答案)

条件状语从句

一、条件状语从句通常由if（如果）, unless（除非），as long as（只要）引导。

例如：If it rains tomorrow, we won’t go to the park. 如果明天下雨，我们就不去公园了。

Unless weather stops me, I go for a walk every. 我每天都会去散步，除非遇上坏天气。

Our parents will be pleased with our performance as long as we try our best.

小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现。

Our parents will be pleased with our performance _____ _____ ______ we try our best.

2、如果人人为保护环境做出贡献，世界将会变得更美好。______ ______ ______ _____ _______ to protecting the environment, the world will become much more beautiful.

二、if引导的条件状语从句

（1）“if从句+祈使句”的句子。其实，if作为一个连词，主句也可以是其他形式的句子。

例如：If you want to go, please let me know.

If the green light isn’t on, wait for a minute.

(2)“祈使句+ and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。

注意：A. “祈使句+ and + 陈述句”可以转化为if引导的肯定条件状语从句，而且主语是第二人称。

B. “祈使句+ or + 陈述句”可以转化为if引导的否定条件状语从句，而且主语是第二人称。

例如：Study hard and you will pass the exam. =If you study hard, you will pass the exam.

Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.

考题(2010重庆中考)Work hard，________ you may catch up with your classmates soon.

A.or

B.but

C.and

D.yet

思路解析：本句是“祈使句＋and”的句型，句意为“努力学习，你会很快赶上其他同学的”，and在句中表示承接关系，所以选C项。答案：C

黑色陷阱：本题的陷阱是句型，本句型区别于“祈使句＋or”，这个句型的含义是“……，不然的话/否则……”。

绿色通道：祈使句后面既可以加and，也可以加or，所以要全面分析句意，再作决定。

小试牛刀：用if连接下列句子

1、Go to bed early and you will have a good rest.

2、Hurry up, or you’ll miss the bus.

三、if从句与主句具有以下特点：

1．If从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。

e.g.If you can’t come tomorrow, we can hold the party a little later.明天你如果不能来，我们可迟一点举行宴会。

If it doesn’t rain tomorrow, we’ll go to the Great Wall. 明天如果不下雨，我们就去长城。

2．当if表示未来的条件时，主句中用一般将来时，从句用一般现在时，即“主将从现”。表示如果某种条件存在，就有可能/不可能发生什么事情。

e.g.If you don’t get up early, you will be late for school.你如果不早点起床，上学就会迟到。

If I play games on it, it will go wrong. 如果我用它玩游戏，它就会坏掉。

3．if从句可放在主句前或主句后，从句置于主句前时，须用逗号与主句隔开，反之则不用逗号。

e.g.If it’s fine tomorrow, we can go out. 如果明天天气好，我们就能出去。

She will be happy if she joins the party. 如果她参加聚会她会很开心的。

I’ll ask the teacher for help if I don’t understand. 如果我不懂我会求助老师的。

三．注意if引导的条件状语从句和宾语从句的区别

if可以用来引导宾语从句也可以用来引导条件状语从句，主要是要弄清if引导从句的时态。if在引导宾语从句时，意为“是否”。要根据实际情况来确定时态，而if在引导条件状语从句时意为“如果，假设”，要用一般时代替将来时，即“主将从现”。

e.g.I want to know if he will come here tomorrow.我想知道他明天是否到这儿来。

（if在上句引导的是宾语从句，从句中有很明显的表将来的时间状语tomorrow，所以if从句要用一般将来时。）e.g.If it rains tomorrow, we’ll put off the sports meeting.如果明天下雨，我们就推迟运动会。

（if在上句引导的是条件状语从句，尽管从句中也有表将来时的时间状语tomorrow，从理论上讲也应该用一般将来时，但是在if引导的条件状语从句中要用一般现在时代替一般将来时，故从句谓语用rains而不用will rain. ）

二、典题分析

1、（2010上海）We will have no water to drink we don’t protect the earth.

A. until

B. before

C. though

D. if

[答案]D．[解析] if 引导条件状语从句，表示“如果”。意思是如果我们不保护地球，我们将会没有水喝。

2、（2011 重庆）We will plant trees tomorrow, and I don’t know Tom will come and join us.

A. if

B. which

C. what

D. where

[答案]A．[解析] if 引导宾语从句，表示“是否”。意思是我们明天将会去植树，但是我不知道Tom会不会去。

3、—Do you know if finished the work? —Not yet. If he , he will give me a call.

A. he’s, will finish

B. he’ll, finishes

C. he’s , finishes

D. he’ll , will finish

[答案]C．[解析]问句的if 引导宾语从句，表示“是否”，从句要用陈述语序，从答句Not yet.中可以看出从句应该用现在完成时态，答句的if 引导状语从句，要遵循主将从现的规律。

练习

一、用if 连接下面的句子：

1、 You do not understand the article. Ask your teacher.

2、 You want to know more about it. Please call your teacher.

3、Tell him to make a phone call to me. He will come here tomorrow.

4、You want to go. Please tell me.

5、Look at our website. The camera does not work.

二、用所给的提示词组成一个if引导的条件状语从句。

1、 be tired, have a rest (Tom)

2、 not go to bed early, feel sleepy (you)

3、 become unhealthy, not eat vegetables (children)

4、 not listen to the teacher, not study well (I )

5、 fall behind others in studying, spend too much time on the games (Da Wei)

三、单项选择：

1. You are sure to pass the exam ___ you study hard.

A. if

B. though

C. that

D. since

2. I'll go to see the film with you___I have time this evening.

A. whether

B. so

C. if

D. when

3. ___ you study harder, you'll never pass the final exam.

A. If

B. Until

C. Unless

D. Except

4．We’ll stay at home if it ______ this afternoon.

A．rain B．rains C．to rain D．raining

5．We will go to the Great Wall if it ______tomorrow.

A．won’t rain B．isn’t raining C．rained D．doesn’t rain 6．—I don’t know if he ______.

—He will come if it ______.

A．comes; won’t rain B．will come; doesn’t rain C．comes; doesn't rain D．will come; won’t rain

7．Do you know what time ______？

A．the train leave B．does the train leave

C．will the train leave D．the train leaves

8．Do you think if______ an English film tomorrow night？

A．is there B．there is going to have

C．there is going to be D．will there be

9．Will you please tell me ______？

A．where Pudong Airport is B．how far Pudong Airport was

C．how can we get to Pudong Airport D．when was Pudong Airport built

10．—Mike wants to know if______ a picnic tomorrow.

—Yes. But if it ______, we’ll visit the museum instead.

A．you have; will rain B．you will have; will rain

C．you will have; rains D．will you have; rains

11．—Why didn’t Nick come to school yesterday？

—______ he was ill.

A．After B．Where C．When D．Because

12．This box is ______ heavy ______ I can’t carry it.

A．too; to B．so; that C．very; that D．too; that

13．I don’t know ______ he still lives here.

A．where B．what C．when D．whether

14. ---Do you know if he _______ to play basket ball with us?

---I think he will come if he ______ free tomorrow.

A. comes; is

B. comes; will be

C. will come; is

D. will come; will be

15. In the zoo if a child _____ into the water and can’t swim, the dolphins may come up ______ him.

A. will fall; to help

B. falls; to help

C. will fall; help

D. falls; helping

16.In the bookshop，a reader asked the shop keeper ___ Who Moved My Cheese was an interesting book.

A.that

B.how

C.what

D.if

17、I want to know ________ you have a brother.

A.if

B.that

C.those

D.them

18、We will go hiking if it tomorrow.

A.will be fine

B.is fine

C.be fine

D. is gong to be fine

19、Maybe you if you make some bad friends.

A.go wrong

B. will go wrong

C.going wrong

D. is going to be wrong

20、—Do you know if finished the work?

—Not yet. If he , he will give me a call.

A. he’s, will finish

B. he’ll, finishes

C. he’s , finishes

D. he’ll , will finish

答案：1-5 ACCBD 6-10 BDCAC 1-15 DBDCB 16-20、DABBC

if引导的条件状语从句讲解和练习(答案)

t 条件状语从句 一、 条件状语从句通常由 if （如果）, unless （除非），as long as （只要）引导。 例如：If it rains tomorrow, we won ’go to the park. 如果明天下雨，我们就不去公园了。 Unless weather stops me, I go for a walk every. 我每天都会去散步，除非遇上坏天气。 Our parents will be pleased with our performance as long as we try our best. 小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现。 Our parents will be pleased with our performance _____ _____ ______ we try our best. 2、如果人人为保护环境做出贡献，世界将会变得更美好。______ ______ ______ _____ _______ to protecting the environment, the world will become much more beautiful. 二、if 引导的条件状语从句 （1）“if 从句+祈使句”的句子。其实，if 作为一个连词，主句也可以是其他形式的句子。 例如：If you want to go, please let me know. If the green light isn ’t on, wait for a minute. (2)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。 注意：A. “祈使句 + and + 陈述句”可以转化为 if 引导的肯定条件状语从句，而且主语是第二人称。 B. “祈使句 + or + 陈述句”可以转化为 if 引导的否定条件状语从句，而且主语是第二人称。 例如：Study hard and you will pass the exam. =If you study hard, you will pass the exam. Hurry up, or you ’ll be late. =If you don ’t hurry up, you ’ll be late. 考题 (2010 重庆中考)Work hard ，________ you may catch up with your classmates soon. A.or B.but C.and D.yet 思路解析：本句是“祈使句＋and”的句型，句意为“努力学习，你会很快赶上其他同学的”，and 在句中表示承接 关系，所以选 C 项。答案：C 黑色陷阱：本题的陷阱是句型，本句型区别于“祈使句＋or”，这个句型的含义是“……，不然的话/否则……”。 绿色通道：祈使句后面既可以加 and ，也可以加 or ，所以要全面分析句意，再作决定。 小试牛刀：用 if 连接下列句子 1、Go to bed early and you will have a good rest. 2、Hurry up, or you ’ll miss the bus. 三、if 从句与主句具有以下特点： 1．If 从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。 e.g.If yo u can’t come tomorrow, we can hold the party a little later.明天你如果不能来，我们可迟一点举行宴会。

中考英语状语从句专项训练及答案及解析

中考英语状语从句专项训练及答案及解析 一、初中英语状语从句 1．It’s much easier for us to become friends________ we share similar interests. A．unless B．when C．even though D．so that 【答案】B 【解析】 【详解】 句意：当我们分享相似的兴趣爱好时，对于我们来说成为朋友更加容易一些。 考查连词。unless如果不，除非，引导条件状语从句；when当……时候，引导时间状语从句；even though尽管，引导让步状语从句；so that以便，因此，结果，引导目的或结果状语从句。根据句意可知此句表示时间，故填when，选B。 2．---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy. A．since B．unless C．when D．until 【答案】B 【解析】 试题分析：句意：----你想要明天和我们一起去划船吗？好的，如果我不忙我就去。A自从；B如果不；C当……时候；D直到……才。根据句意，应选B。 考点：考查连词。 3．I still remember my first teacher________we haven't seen each other for many years. A．for B．because C．since D．though 【答案】D 【解析】 试题分析：句意：尽管我们很多年没有见过面了，但是我仍然记得我的第一位老师。此题考查连词，A因为；B因为；C自从；D尽管。根据句意，应选D。 考点：考查连词。 4．—The novel seems a little boring. —You won’t enjoy it _______________ you put your heart into it. A．when B．if C．after D．unless 【答案】D 【解析】 试题分析：句意：--这部小说似乎有点儿无聊。--如果你不用心读的话，你不会享受到这本书。when，当……的时候；if如果；after在……之后；unless，如果不，除非。结合句意，故选D。 考点：考查连词的用法。

if引导的条件状语从句练习题

If条件状从句练习 1. If there no buying and selling of animals, there no killing in nature. A. is; will he B. will be; will be C. is; is D. will be; is 2. I’m waiting for my friend._, I'll go shopping alone. A. If she comes B. If she won't come C. If she doesn't come 3.The students ____ have a sports meeting this weekend if it _____。A. won’t; rains B. will; rains C. won’t; will rain D. are going to; is going to rain 1.If you _____ to the party, you’ll have a great time A. will go B. went C. go D. going 2.–What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___. A. isn’t rain B. rain C. won’t rain D. doesn’t rain 3. What will you do if you _____ to the old folk’s home visit? A. go B. went C. going D. will go 4. If I eat ____ food, I’ll be very fat. A. too many B. many too C. too much D. much too 5. I’ll give the book to him if he ___ here next Sunday. A. will come B. comes C. is coming D. came 6. I ____ her the answer if she ____me. A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks 7. We’ll go to the farm and help the farmers with the apple-picking if it ____ tomorrow. A. won’t rain B. will be rainy C. doesn’t rain D. isn’t raining 8. There is going to _______ a sports meeting next week. If it ________, we’ll have to cancel it. A. be, will rain B. have, will rain C. be, rains 9. Y our teacher will be unhappy if you _______ to school late. A. come B. will come C. are coming D. came 10．I don’t know if he __. If he __ , please let me know. A. comes, comes B. will come, will come C. will come, comes D. comes, will come 11．Y ou will stay healthy _______ you do more exercise, such as running and walking. A. if B. how C. before D. where 12.If she here tomorrow, I will tell you. A. comes B. will come C. come D. came 13. I’m waiting for my friend. , I’ll go shopping alone. A. If she comes B. If she doesn’t come C. If she won’t come 14. —Tom wants to know if you will have a picnic tomorrow. —Y es. But if it ______, we’ll play chess instead. A. will rain B. rained C. is raining D. rains 15. If Tom _____ the game, we'll give him a surprise". A. win B. wins C. won D. miming 二、用所给词的适当形式填空。 1.If you ________(feel) tired, you _________ (have) to have a rest. 2. Where _____ he ____(see) the film if he _________(have) time? 3. If there ____(be) fewer trees, there _______( be) more pollution. 4. He ___(dress) more casually if he ___( not work) on weekends. 5. If Marcia _______(live) alone, she _______( keep) a pet parrot. 6. Lana _____ buy) a new dress if the old one ____(be) out of style. 7.The twins _______(fight) if they__________(argue). 8. I ______(have) a bake sale if I ____(need) money for education.

If引导条件状语从句的详细用法解答

If引导条件状语从句的详细用法解答 引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。如： If you ask him，he will help you．如果你请他帮忙，他会帮你的。 If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。 If you have finished the homework，you can go home．如果你作业做完了就可以回家了。 另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如： If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。 I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。 另外你还要注意if 条件句的时态搭配 1．if从句用一般现在时，主句用一般将来时 If he runs he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。 The cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。2．if从句用一般现在时，主句用may/might/can If the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。 If it stops snowing we can go out. 如果雪停了，我们就可以出去。 3．if从句用一般现在时，主句用must/should If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。 4．if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn)如果把冰加热，它就会化成水。5．if从句用现在进行时，主句用一般将来时 If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得，上楼就会找到他。 6．if从句用现在完成时，主句用一般将来时 If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账 注意： 学习" if " 引导的条件状语从句的用法,现在总结一下: if 条件句不一般,几个要点记心间; 条件句,放在前,逗号要放句中间。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。

if引导的条件状语从句练习题

If条件句专练 I单项选择 1. If he hard, he will get good grades. A. study B. studies C. will study D. studied 2. I want to know if Mary to the party tomorrow. A. go B. went C. will go D. goes 3. Everyone must dress up. If you, they won’t let you in. A. don’t B. won’t C. can’t D. mustn’t 4. Mary will go to Sanya if she a five-day trip. A. have B. had C. will have D. has 5. If he comes late,he will miss the train.

A. and B. so C. / D. or II用所给词的适当形式完成句子 1. If Bruce ________(be) free, Let’s go to the park. 2. Tell him the news if you ________ ( meet ) him tomorrow. 3. If he ________(do) well in the exam. His teacher will be pleased with him. 4．If Mary ______(leave ) home too long, she ________(miss) her parents. 5. Be quick ,and you _________(arrive) in time. 6. Hurry up, or you_________(be ) late for school. III完成句子 1.如果他到的晚了会发生什么事情? What _______________ if he _____________ late? 2.如果努力学习,你就会取得好成绩. If you_________ ________,you ________ good ___________. 3.他如果看电视太久了,他的父母会不高兴. If he _____ TV too much, his parents _____ _________unhappy. 4.如果我们为他组织生日聚会,大家都会来的. Everyone ________ if we _______a birthday party ________ him. 5.如果明天不下雨,我会和你一起去公园的.

中考英语状语从句专题(含答案)

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