1、初三秋季班英语讲义第六讲 Module 6-U3 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。如：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。二同义句的转化：条件状语从句和主句还有一个共同的伙伴，有时它可以替代从句和主句，它就是“祈使句+and / or+简单句” 。其中 and 表示句意顺承；or 则表示转折，意为“否则” 。例如： 1. If you work harder, youll pass the exam. = _, and youll pass t
2、he exam. 如果你再努力些，你就会通过考试。 2. If you dont hurry up, youll miss the train. = Hurry up, _. 如果你不快点儿，你就赶不上火车了。【即时训练】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 c
3、atch a cold. 3. A. If you dont help me, I cant finish my work on time. B ._help, I cant 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. 三主从句的位置 大多数情况下，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，主从句之间必须用逗号隔开。例如： Please tell
4、 me if he comes back. 如果他回来了，请告诉我一声。= _ 四if 的两面性 if 引导条件状语从句时意为“如果” ，如果引导宾语从句则意为“ 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_从句。这个从句表示“ 条件”，修饰主句。整个句子的意思是“_”。句 2) 中 if 引导的是_从句，充当谓语动词 dont know 的宾语，整个句子的意思是“_”。 【即时训练】 Mike wants to know i
5、f_ a picnic tomorrow. （2014 年河北省）Yes. But if it_, well 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【综合练习】一、用所给词的适当形式填空1. If there _(be) fewer trees, there _( be) more pollution.2. If Marcia _(live) alone, she _( keep) a
6、pet parrot.3. Lana _( buy) a new dress if the old one _(be) out of style.4. If Mr Green _(say) I am hard- working, my parents _( feel) glad.5.I _(go) to the beach if it_ ( not rain) this week.6.He _ (write) a letter to his dad if he _ (get) his report card this week.7. If she _(get) up late, she _ (
7、 not catch) the early bus.8. Peter_ (major) in English if he _(pass) the exams in Peking University.二完成句子1. 如果努力学习，你就会取得好成绩。If you_ _, you _ _ good _.2. 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.3. 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.4. 如果明天不下雨，我会和你一
8、起去公园的。If it _ _ tomorrow, I _ go to the park _ you.5. 如果他有空，他会帮助你的。If he _ _, he _ _ you.6. 你如果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. 7. Please call me. You dont arrive at the airport in time.(合并为一句）_ if you dont arrive at the airport in time.8. 如果你生病了
9、，请给医生打电话。 （根据汉语意思完成英语句子）If you are ill, please _. 9.如果它现在不能工作，等几分钟，再试试。 （根据汉语意思完成英语句子） If it _ (not work), wait for a minute and then try again.10. 如果你不想听音乐，就关掉收音机。 （根据汉语意思及提示完成英语句子）_ (turn ) off the radio if you_ (not want) to listen to music. 11 If you _（want ）to know how it works, read the instru
10、ctions.12 _ (not touch) the machine. Its too dangerous.13 No _ (shout) , my child. This is a public place.14 If it _ (not work), _ (wait) for a minute.实战演练 条件状语从句中考题【2011 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. w
11、ill be; is【2011 黑龙江绥化市】25. Im waiting for my friend. _, Ill go shopping alone.A. If she comes B. If she wont come C. If she doesnt come【2013 雅安】10.The students _ have a sports meeting this weekend if it _.A. wont; rains B. will; rainsC. wont; will rain D. are going to; is going to rain【2014 湖南湘西】23.
12、 Dont talk loudly at the meeting. If you _, you will have to leave.A. do B. are C. did【201 湖南益阳】29. I dont know if she_ to my birthday party tomorrow. If she_, Ill be very happy.A. comes; comes B. will come; comes C. comes; will come【2011 重庆江津】36.If she_ here tomorrow, I will tell you.A. comes B. wi
13、ll come C. come D. came【2011 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. A. will take part in; will be B. takes part in; is C. will take part in; is D. takes part in; will be【2013 广州】36. Tom wants to know if you
14、 will have a picnic tomorrow.Yes. But if it _, well play chess instead.A. will rain B. rained C. is raining D. rains【2012 上海】36. If Tom _ the game, well give him a surprise“.A. win B. wins C. won D. miming【2014 浙江宁波】31. I hear the famous singer Xu Song may come to Ningbo next month. Really? _ he com
15、es, my younger sister will be very excited.A. If B. Until C. Unless D. Before【2011 广东】43. Lets go fishing if it _ this weekend. But nobody knows if it _.A. is fine, will rain B. will be fine, rainsC. will be fine, will rain D. is fine; rains 【能力提升】首字母填空Everyone must go to bed early and get up early，
16、or we wont be healthier and cleverIs this true? Perhaps it isThe body must have e_ sleepChildren of your age need t_ hours sleep every dayIf you dont go to bed early，you wont h_ enough sleep， then you cant think properly and cant do your work properlyYou will not be cleverSome people go to bed late
17、and get up lateThis is not good f_ themWe must sleep at nine when it is darkThe dark help us s_When the daytime comes，we must get upThis is time for exercisesIf you dont do exercises，it becomes w_ Exercises help a strong bodyExercises help the blood（血液）flow around i_ the bodyThis is very importantBlood takes food t_ all parts of our body，the brain （大脑）needs bloodWe think w_ our brain If we keep our body h_ and take exercises，we can think better
