2022年if引导的条件状语从句精讲与专题练习.docx

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1、名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载八年级英语： if 引导的条件状语从句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假如你请他帮忙,他会帮你的；If you fail in the exam,you will let him down 假如你考试不及格,你 会让他扫兴的；If you have finished the homework, you

2、can go home假如你作业做 完了就可以回家了；另外,if 从句仍表示不行实现的条件或根本不行能存在的条件,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 假如我是你,我会邀请 他参与聚会；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；另外你仍要留意 if 条件句的时态搭配1if 从句用一般现在时,主句用一般将来时

3、 If he runs hell get there in time. 假如他用跑的,他就会准时赶到那 儿；The cat will scratch you if you pull her tail. 假如你拉猫的尾巴, 它就会 抓你；2if 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. 假如雾在大一 些,飞机可能就会改在别的机场降落；If it stops snowing we can go out. 假如雪停了,我们就可以出去；3if 从句用一般现在时, 主句用 mu

4、st/should If you want to lose weight you must/should eat less bread. 假如你想减 肥,你必需少吃面包；4if 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 假如把冰加热,它就 会化成水；细心整理归纳 精选学习资料 第 1 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载5i

5、f 从句用现在进行时, 主句用一般将来时If you are looking for Peter youll find him upstairs. 假如你是在找彼得,上楼就会找到他；6if 从句用现在完成时, 主句用一般将来时If you have finished dinner Ill ask the waiter for the bill. 假如你吃完了,我就叫服务生来算账留意 ：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；在 if 引导的

6、条件状语从句中,假如从句谈论的是一个有可能发生的事实及其产生的相关的结果, 主句用一般将来时态, 从句用一般现在时态；如：We can walk there if we cant find a bus . If it rains tomorrow ,we will not go to the zoo. What will you do if you find a panda in danger. 假如 if 条件句谈论的是重复发生和预示要发生的情形和大事,就主从句大多用一般现在时态；如：If bears are in danger ,they attack people. 在 if 引导的条件

7、状语从句中, if 和条件句位置敏捷,可直接放在主句后面,如 if 条件句放句首,从句后面要加逗号,和主句隔开；仍要留意前后时态一样原就一、用所给词的适当形式填空1.If you _feel tired, you _ have to have a rest. 3. If there _be fewer trees, there _ be more pollution. 5. If Marcia _live alone, she _ keep a pet parrot. 6. Lana _ buy a new dress if the old one _be out of style. 9. P

8、eter _ send me a beautiful souvenir if he 细心整理归纳 精选学习资料 第 2 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载_tour Spain. 10. If Mr Green _say I am hard- working, my parents _ feel glad. 11.I _go to the beach if it_ not rain this week. 13.He

9、 _write a letter to his grandparents if he _get his report card this week. 14. If she _get up late, she _ not catch the early bus. 15. Peter _major in English if he _pass the exams in Peking University. 16. 假如努力学习,你就会取得好成果；If you_ _, you _ good _. 17. 他假如看电视太久了,他的父母会不兴奋； If he _ TV too much, his par

10、ents _ _ unhappy. 18. 假如我们为他组织生日聚会,大家都会来的； Everyone _ if we _ a birthday party _ him. 19. 假如明天不下雨,我会和你一起去公园的；If it _ _ tomorrow, I _ go to the park _ you. 21. 假如他有空,他会帮忙你的；If he _, he _ you. 23. 你假如抄同学的作业就不能学好各门功课；You _ _ good at all the subjects if you _ the other students homework. .单项挑选（ 15 分）1.I

11、f you _ to the party, you ll have a great time. A. will go B. went C. go D. going 2. It will be a long time _ Peter _ his work. A. since, has finished B. after, finishes C. when, will finish D. before, finishes. 3. What will father _ us from Japan. A. take B. bring C. carry D. make 4. Weifang is fam

12、ous _ kites. A. for B. to C. on D. with 5 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 6. What are you going to do tomorrow. 细心整理归纳 精选学习资料 第 3 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - -

13、- - - - - -精品资料 欢迎下载 -Well go to the library tomorrow if it _. A. isnt rain B. rain C. wont rainD. doesn t rain7.Do you know when he will come back tomorrow. -Sorry, I dont know. When he _ back, Ill tell you. A. comes B. will come C. come D. may come 8. What will you do if you _ to the old folks hom

14、e visit.A. go B. went C.going D. will go 9. If I eat _ food, Ill be very fat.A. too many B. many too C. too much D. much too 10. Ill give the book to him if he _ here next Sunday.A. will come B. comes C. is coming D. came 11. There _an English film in our school tomorrow. A. is going to have B. will

15、 have C. is going to be D. has 12. Could you tell us where _？A. will the next Olympic Games held B. the next Olympic Games will be held C. would the next Olympic Games be held D. the next Olympic Games would be held 13. When my mother returned last night, I _ a book. A. read B. am reading C. was rea

16、ding D. am going to read 14.What _ you _ when it began to rain. A. do, do B. were, doing C. are, doing D. did, do 15. Ill wake you up when he _back. A. will B. is going to come C. comes D. come 1-5 CDBAD 6-10 DAACB 11-15 CBCBC If 条件状从句例题【 2022 陕西】 24. If there no buying and selling of animals, there

17、 no killing in nature. A. is; will he B. will be; will be C. is; is D. will be; is 答案： A 【解析】考查点：此题考查 if 引导的状语从句的时态； if 意为“假如” ；引导条件状语从句,主将从现；应选A；【2022 黑龙江绥化市】 25. Fm waiting for my friend._, Ill go shopping alone. A. If she comes B. If she wont come C. If she doesnt come 答案： C【解析】考查从句的时态；If 引导的条件状语

18、从句,主句用将来时,从句用一般现在时；依据句意：假如他不来,我就独自去购物；应选 C；【2022雅安】10.The students _ have a sports meeting this weekend if it _；A. wont; rains B. will; rains C. wont; will rain D. are going to; is going to rain 答案 ：A【解析】 考查 if 引导的条件状语从句细心整理归纳 精选学习资料 第 4 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结

19、 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载用法； if 意为“假如”,引导条件状语从句,主句用一般将来时,从句用一般现在时态； 句意为 “假如明天下雨我们就不举办运动会了”；故选 A；If 从句如何考？请看这道 2006 年河北省的中考题：Mike wants to know if_a picnic tomorrow. Yes. But if it_, well visit the museum instead. A. you have; will rain B. you will have; will rain C. you will hav

20、e; rains D. will you have; rains 正确答案应当是 C；为什么同样一个 if,后面所接的时态却不相同呢？这要从 if 引导的条件状语从句说起；条件状语从句表示主句动作发生的条件,在中学阶段常由 if如果引导,表示假如有从句的动作发生就会有主句的动作发生；例如：Please call me if he is at home. 假如他在家的话,请给我打电话；条件状语从句和主句仍有一个共同的伙伴,有时它可以替代从句和主句,它就是 “祈使句 +and / or+ 简洁句 ”；其中 and 表示句意顺承；or 就表示转折,意为 “否就”；例如：If you work har

21、der, youll pass the exam. = Work harder, and youll pass the exam. 假如你再努力些,你就会通过考试；If you dont hurry up, youll miss the train. = Hurry up, or youll miss the train. 假如你不快点儿,你就赶不上火车了；在学习条件状语从句时,同学们要留意以下几点：一、时态呼应一般来讲, 复合句都要遵循主、 从句时态呼应规律, 状语从句也不例外；即主句用现在时,从句也用现在时；主句用过去时,从句也用过去的某种时态；详细地讲,主句是一般现在时 包括祈使句和含有

22、情态动词 can, may, must 等,从句也用一般现在时；例如：Have a good rest if you are tired. 假如你累了, 就好好休息一会儿吧；You must see the doctor if you are ill. 假如你生病了,就必需去看医生；这里提示大家特殊要留意： 假如主句是一般将来时态, 这时从句不行以用将来时态,而要用一般现在时；例如：I won t go there with you if it rains tomorrow. 假如明天下雨的细心整理归纳 精选学习资料 第 5 页,共 9 页 - - - - - - - - - - - - -

23、- - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载话,我就不和你一起去那儿了；If we do nothing, there will be only standing room on the earth. 假如我们不实行任何措施,地球上将只有站的地方了；二、主从句的位置大多数情形下, 从句可以位于主句之前, 也可以位于主句之后；不过从句在前时,主从句之间必需用逗号隔开；例如：Please tell me if he comes back. = If he comes back, please t

24、ell me. 假如他回来了, 请告知我一声；三、if 的两面性if 引导条件状语从句时意为“假如”,假如引导宾语从句就意为“是否”；请比较：1 We will go out if it is fine tomorrow. 2 I dont know if the train has arrived. 句 1 中 if 引导的是状语从句；这个从句表示“ 条件”,修饰主句；整个句子的意思是“ 假如明每天气好,我们就出去”；句 2 中if 引导的是宾语从句,充当谓语动词 dont know 的宾语,整个句子的意思是“ 我不知道火车是否到了”；通过以上讲解,同学们应当知道本文开头那道中考题的答案为什

25、么选 C 了吧？再做几道题巩固一下吧！实战演练 句型转换（同义转换）1. A. You must be quick. If not, youll miss the early bus. B. _quick, _youll miss the early bus. 2. A: Put on your coat, or youll catch a cold. B: _you _put on your coat, youll catch a cold. 3. A. If you dont help me, I cant finish my work on time. B ._help, I cant

26、finish my work on time. 4. A. If you play basketball here, you may break the windows. B. _play basketball here,_you may break the windows. 条件状语从句中考题【2022 陕西】 24. 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 答案：【解析】

27、考查点：此题考查 if 引导的状语从句的时态； if 意为“ 如果” ；引导条件状语从句,主将从现；应选 A；【2022 黑龙江绥化市】 25. I m waiting for my friend._, Ill go shopping alone. 细心整理归纳 精选学习资料 第 6 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载A. If she comes B. If she wont come C. If she doe

28、snt come 答案：【解析】考查从句的时态； If 引导的条件状语从句,主句用将来时,从句用一般现在时；依据句意：假如他不来,我就独自去购物；应选C；【2022 雅安】10.The students _ have a sports meeting this weekend if it _. A. wont; rains B. will; rains C. wont; will rain D. are going to; is going to rain 答案：【解析】考查 if 引导的条件状语从句用法；if 意为“ 假如” ,引导条件状语从句,主句用一般将来时,从句用一般现在时态； 句意为

29、“ 如果明天下雨我们就不举办运动会了” ；应选 A；【2022 湖南湘西】 23. Dont talk loudly at the meetin g. If you _, you will have to leave. A. do B. are C. did 答案：【解析】考查状语从句的时态当主句为将来时态是,if 引导的状语从句中用一般时态代替将来时,而这里需要助动词, 不是系动词, 所以挑选答案 A；【2022 湖南益阳】 29. I dont know if she to my birthday party tomorrow. If she , Ill be very happy. A.

30、 comes; comes B. will come; comes C. comes; will come 答案：【解析】宾语从句和条件状语从句的考查；由 if 引导的条件状语从句,用一般现在时态,主句用一般将来时；当 if 做是否讲时,所引导的宾语从句通常是一般将来时；【2022 黑龙江齐齐哈尔】 35. I m waiting for my friend. , I ll go shopping alone.A. If she comes B. If s he doesn t come C. If she wont come答案：【2022 重庆江津】36.If she here tomor

31、row, I will tell you. A. comes B. will come C. come D. came 答案：【2022 山东滨州】 30. Mary, could you tell me if your mother _ our school sports meeting tomorrow. I think she will come to school if she _ free. 细心整理归纳 精选学习资料 第 7 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - -

32、 - - - - - - - - - -精品资料 欢迎下载A. will take part in; will be B. takes part in; is C. will take part in; is D. takes part in; will be 答案：【解析】考查 if 引导的宾语从句及条件状语从句的用法；问句是由if 引导的宾语从句,时间状语为 tomorrow ,故用一般将来时；答语是由 if 引导的条件状语从句,主句用将来时,从句用一般现在时,应选 C；【2022 山东泰安】 36. Tom wants to know if you will have a picnic

33、tomorrow. Yes. But if it _, well play chess instead.A. will rain B. rained C. is raining D. rains 答案：【解析】连词的用法； If 引导的条件状语从句,主句用将来时,从句用一般现在时；应选 D；【2022 山东潍坊】 6. If Tom _ the game, well give him a surprise. A. win B. wins C. won D. miming 答案：【解析】考查 if 引导的条件状语从句； 在 if 引导的条件状语从句中,假如主句和从句发生的动作都在将来时间,从句用

34、一般现在时表将来；应选 B；【2022 浙江宁波】 31. I hear the famous singer Xu Song may come to Ningbo next month. Really. _ he comes, my younger sister will be very excited. A. If B. Until C. Unless D. Before 答案：【解析】状语从句考查； if 假如；until 到 为止； unless 除非；before 在 之前；依据句意,假如他来,我的妹妹将会很兴奋的；【2022 广东】 43. Let s go fishing But

35、nobody knows if it _. A. is fine, will rain B. will be fine, rains C. will be fine, will rain rains if it _ this weekend. D. is fine; 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 8 页,共 9 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -精品资料 欢迎下载答案：【解析】此题考查 if 的用法；第 1 空 if 引导的是条件状语从句, 因此用一般现在时表示将来；第 2 空 if 引导的是宾语从句,时态时间状语 this weekend 打算用将来时；应选 A；细心整理归纳 精选学习资料 第 9 页,共 9 页 - - - - - - - - - - - - - - - - - - - - - - - -