初中英语初一if条件句精品资料

1、第五讲if 条件句姓名：学校：年级：【学习目标 】：1. 了解 if 条件句，及其用法2. 通过读写训练，掌握if 条件句的用法【知识要点】定义：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。E.g. If you ask him， he will help you 如果你请他帮忙，他会帮你的。E.g. 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。E.g. If you have finished the homework， you can g

2、o 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。， I would invite him to the party 如果我是你，我会邀请他参加聚会。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1if 从句用一般现在时，主句用一般将来时E.g. If he runs he ll get there in time.如果他用跑的，他就会及时赶到那儿。E.g. The cat will scratch you if you pu

3、ll her tail.如果你拉猫的尾巴，它就会抓你。2if 从句用一般现在时，主句用may/might/canE.g. 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。E.g. If it stops snowing we can go out.如果雪停了，我们就可以出去。3if 从句用一般现在时，主句用must/shouldE.g. 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。4i

4、f 从句用一般现在时，主句用一般现在时E.g. 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。5if 从句用现在进行时，主句用一般将来时E.g. 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。6if 从句用现在完成时，主句用一般将来时E.g. If you have finished dinner I llaiteraskforthethew bill.如果你吃完了，我就叫服务生来算账注意 ：学习 " if

5、"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 引导的条件状语从句中，如果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：E.g. We can walk there if we can't find a bus .E.g. If it rains tomorrow ,we will not goto the zoo.E.g. What will youdo if youfind a p

6、anda in danger.如果 if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。E.g. If bears are in danger ,they attack people.在 if 引导的条件状语从句中， if 和条件句位置灵活，可直接放在主句后面，若if 条件句放句首，从句后面要加逗号，和主句隔开。还要注意前后时态一致原则【经典练习】一 .单项选择（）1. If you _ to the party, youll have a great time.A. will goB. wentC. goD. going（）2. It will be a lon

7、g time _ Peter _ his work.A.since, has finishedB. after, finishesC. when, will finishD. before, finishes.（）3. What will father _ us from Japan?A. takeB. bringC. carryD. make（）4. Weifang is famous _ kites.A. forB. toC. onD. with（）5 I _ her the answer if she _me.A. can tell, will askB. will tell, will

8、 askC. would tell, askD. will tell, asks（）6. What are you going to do tomorrow?-We ll go to the library tomorrow if it _.A. isn t rainB. rainC. won t rainD. doesn t rain（）7. Do you know when he will come back tomorrow?-Sorry, I don t know. When he _ back, I ll tell you.A. comesB. will comeC. comeD.

9、may come（）8. What will you do if you _ _ to the old folks home visit?A. goB. wentC.goingD. will go（）9. If I eat _ food, Ill be very fat.A. too manyB. many tooC. too muchD. much too（）10. I ll give the book to him if he _ here next Sunday.A. will comeB. comesC. is comingD. came（）11. There _an English

10、film in our school tomorrow.A. is going to haveB. will haveC. is going to beD. has（）12. Could you tell us where _？A. will the next Olympic Games heldB. the next Olympic Games will be heldC. would the next Olympic Games be heldD. the next Olympic Games would be held1-5 CDBAD6-12 DAACBCB二在正确的答案下划一条线。1

11、. Daina ( will go/go/goes) to Europe if she (will pass/pass/passes) the exams .2. The graduates (will teach/teach/teaches)in the poor village if the Ministry of3. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once.4. If it (won t/don t/doesn t/ isn t) rainy,

12、we (will take/ take/takes) walk outside.5. If a UFO (will land/land/lands) in front of me, I (will go/go/goes) in to look for the alien.6. If he (will have/have/has) money, he (will bulid/build/builds) a science lab.7.Don t wait for me if I (am/ will be) late.8.They (won t/don t) go to the beach if

13、it (will rain/rai/rains).9. I (will call/ call) you if he (will stay/stay /stays) at home.10. Mr Smith (will let/ let/lets) you know if he (will need/ need/ needs) help.11.(Will / Do/ Does) he visit the museum if he (won t / dontired? t/ doesn t) get12.Where (will/ do/does) they live if they (will m

14、iss/ miss/ misses) the bus?三、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)

15、 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.9. Peter _( send) me a beautiful souvenir if he _(tour) Spain.10. If Mr Green _(say) I am hard- working, my parents _( feel)glad.

16、11. I _(go) to the beach if it_ ( not rain) this week.12. _they _( have) a match if the P.E. teacher_(be) busy?13.He _(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)inEnglishifhe_(pass) theexamsi

17、nPeking University.三翻译句子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。Ifit _ _ tomorrow, I _ go to the park_ you.6. 如果她睡过头了，就会旅游迟到的。She_ the trip if she _.7. 如果他有空，他会帮助你的。If he _, he _you.8. 如果