if引導的條件狀語從句中考解析

1、If引導的條件狀語從句課本鏈接If you do, you ' II be sorry. (Unit 5, Section A)定義條件狀語從句通常由if如果，unless除非，as long as只要引導 if引導的條件狀語從句表示假設從句的動作發(fā)生，主句的動作就不會發(fā)生。句子結構if從句位亍句苜，逗號,隔開if從旬位于句末不需娶逗號If you are timed, have a restHave a good rest if von are tiredIf we naiit to pass the final exaininus t stud)r hardW e must stu

2、(hT hard ifwant(o pass the final exam.中考考點之時態(tài)照應在復合句中： 當主句是一般現(xiàn)在時或是一般將來時時;2當主句是祈使句時；3當主句含有情態(tài)動詞時，if引導的條件狀語從句通常用一般現(xiàn)在時。歐口:主句的形式遼條件狀語的時態(tài)主句的時態(tài)主句罡般觀在時或者般將來時-般觀在時 注凰動同單三的變優(yōu)一般轄未時主句罡祈決旬主句含有情態(tài)動詞can, Bay, Bust ffsummary；主將從現(xiàn)例句：If she doesn ' t come, she will be so如果她不來，她會遺憾的。Have a good rest if you are tired

3、.如果累了，你就好好休息一下。We must study hard if we want to pass the final exam. 如果想通過期末考試，我們必須努力學習。同義句轉(zhuǎn)換1. If引導的條件狀語從句可以用祈使句，+ and / or + 一般將來時的句子轉(zhuǎn)換。祈使句，+and+陳述句可以轉(zhuǎn)化為if引導的肯定條件狀語從句。祈使句,+o葉陳述句可以轉(zhuǎn)化為if引導的否認條件狀語從句。如：If you work hard, you ' ll pass the exam easily. Work hard, and you ' ll pass努力學X習m easily.你

4、將很容易通過考試。If you don ' t hurry up, you ' ll miss the train. Hurry up, or you1快點點llsst否那么你就趕不上火車了。真題 2022重慶中考Work hard ，you may catch up with your classmates soon.課后練習：用if連接以下句子1、Go to bed early， and you will have a good rest.2、Hurry up, or you ' ll miss the bus.2.用含介詞with或without的介詞短語轉(zhuǎn)換。女

5、口:If there is no water, fish cant live. Fish can ' t liV離開水ou魚不能生存。if引導的條件狀語從句和賓語從句的區(qū)別if可以用來引導賓語從句也可以用來引導條件狀語從句，主要是要弄清if引導從句的時態(tài)。if在引導賓語從句時，意為“是否。要根據(jù)實際情況來確定時態(tài)，并且一般將來時用will+ V.原形;而if在引導條件狀語從句時意為“如果，假設，要用 一般時代替將來時，即“主將從現(xiàn)。rn訂引導的賓語從句辻引導的條件狀語從句河斷依抿If從句位于動詞之后辻從句位于句首，或者句語時態(tài)般將耒時用VL11+ ¥原形 151 見在時e.g

6、 .1 want to know if he will come here tomorrow.我想知道他明天是否到這兒來。if在上句引導的是賓語從句，從句中有很明顯的表將來的時間狀語tomorrow，所以if從句要用一般將來時。e.g.If it rains tomorrow, we' ll put off the sports meeting.女口果明天下雨，我們就推遲運動會。if在上句引導的是條件狀語從句，盡管從句中也有表將來時的時間狀語tomorrow，從理論上講也應該用一般將來時，但是在if引導的條件狀語從句中要用一般現(xiàn)在時代替一般將來時，故從句謂語用 rains 而不用 wi

7、ll rain. 典題分析1、2022 上海We will have no water to drink we don' t protect the earth.A. un tilB. before C. though D. if2、 2022 重慶We will plant trees tomorrow, and I don ' t know Tom will come and join us.A. if B. which C. what D. where3、一 Do you know iffini shed the work?Not yet. If he,he willgi

8、ve me a call.A. he ' s, will finishB. he' ll, finishesC. he ' s , finishesD. he' ll , will finishHomework一、用 if 連接下面的句子：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

9、come here tomorrow.4、You want to go. Please tell me.5、Look at our website.The camera does not work.二、用所給的提示詞組成一個 if 引導的條件狀語從句。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 )(D

10、a Wei)5 、 fall behind others in studying, spend too much time on the games三、單項選擇：1. You are sure to pass the exam _ you study hard.A. ifB. though C. that D. since2. I'll go to see the film with you_I have time this evening.A. whetherB. so C. ifD. when3. _ you study harder, you'll never pass

11、the final exam.A. IfB. Until C. Unless D. Except4We'll stay at home if it this afternoon.A. rainB. rainsC. to rainD. raining5 . We will go to the Great Wall if ittomorrow.A . won ' t rain B . isn ' t rainingC . rained D . doesn ' t rain6 . I don ' t know if he.He will come if it.

12、A . comes; won ' t rainB . will come; doesn ' t rainC . comes; does n't rainD . will come; won ' t rain7 . Do you know what time?A . the train leaveB . does the train leaveC . will the train leaveD . the train leaves8 . Do you thi nk ifan En glish film tomorrow ni ght?A . is thereB .

13、 there is going to haveC . there is going to beD . will there be9 .Will you please tell me?A. where Pudo ng Airport isB . how far Pudo ng Airport wasC.how can we get to Pudo ng AirportD . when was Pudong Airport built10. Mike wants to know ifa pic nic tomorrow.Yes. But if it, we' ll visit the mu

14、seum in stead.A . you have; will rainB . you will have; will rainC . you will have; rainsD . will you have; rains11. Why didn ' t Nick come to school yesterday ?he was ill.A .AfterB . WhereC.WhenD . Because12 .This box isheavy1 can't carry it.A .too; toB . so; thatC .very; thatD . too; that1

15、3 .I don ' t knowhe still lives here.A .whereB . whatC .whe nD . whether14.-Do you know if heto play basket ball with us?-I thi nk he will come if hefree tomorrow.A. comes; isB. comes; will beC. will come; isD. will come; will be15. In the zoo if a childinto the water and canthe dtcsphiins may c

16、ome uphim.A. will fall; to helpB. falls; to helpC. will fall; helpD. falls; helpi ng16n the bookshop , a reader asked the shop keeper Who Moved My Cheese was an interesting book.17、I want to knowyou have a brother.D.them18、We will go hiking if it tomorrow.A.will be fine B.is fine C.be fine D. is gong to be fine19、Maybe you if you m