(暑假一日一练)2020年八年级英语上册if引导的条件状语从句讲义(新版)人教新目标版

1、if引导的条件状语从句（讲义）状语用来表示行为发生的时间、地点、目的、方式、程度等，通常由副词或介 词短语充当，也可由一个句子充当。I slept at home yesterday because I had a bad cold.状语从句状语从句指句子作状语。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式等从句 状语从句一般由连词（从属连词）引导。I will go to school by bike tomorrow if it is sunny.Grammar focus I think I ' ll take the bus to the party. If

2、you do, you ' ll be late.If you take the bus to the party, you' ll be late. I think I ' ll stay at home. If you do, you' ll be sorry.If you stay at home, you ' ll be sorry. What will happen if they have the party today?If they have it today, half the class won' t come. Should

3、 we ask people to bring food? If we ask people to bring food, they ' ll just bring potatochips and chocolate.1 if 在本单元句中意为“; " ，用于引导O即if引导的是一个完整的句子，所以一定要有主谓，成为从句，另一个句子则成为主句。If you go there, I ' ll go, too.We will go hiking if it doesn ' t rain tomorrow.If Bob leaves tomorrow, I will

4、 hold a party for him tonight.2 if引导的条件状语从句既可以放在主句前，也可放在主句后。但是如 果放在主句前，即句首时，从句后面要用 与 主 句隔开。You will keep healthy if you do more exercise.If you do more exercise, you will keep healthy.3时态：if引导的条件状语从句用 表示将来， 主句可以使用一般将来时，含有情态动词的句子或者祈使句。主将从现If you practice speaking English more, you will like it better

5、. If she goes to New York tomorrow, I will go there, too.My sister will be very happy if our uncle comes next week.练习：If Nancy the exam, she will go to Australia for Englishstudy.A. passIf the weather weekend.B. passedC. passesD. will passfine, weA. will be; will B. is; will主情从现C. was; would D. was;

6、 willhave a sports meeting next3If you get up at six tomorrow morning, you can catch the first bus. If you go to study in America next year, you must learn English hard.主祈从现Let' s go out for a walk if it doesn ' t rain tomorrow. If you see a snake in the forest,don' tmove!unless也可引导条件状语从

7、句，表示“如果不，除非" Unless he comes here in an hour, I will go there alone. If he doesn 't come here in an hour, I will go there alone.You will feel worse unless you go to see the doctor right now.You will feel worse if you don ' t go to see the doctor right now.练习：is.you read it, you can '

8、; t imagine how interesting the storyA. UnlessB. Because C. Although D. If-Please give Alice the story book you see her.All right.A. unlessB. orC. butD. ifExercisesyou want to do well、单项选择)1. Studying in groups is necessaryin school.A. ifB. untilC. unlessD. though)2.Will you help me with the trouble

9、?I won'you tell me the truth.A. ifB. butC. afterD. unless)3. If Bobaway fromthe junk food,he will be in goodhealth.rain (A. stay)4. If TomA. win)5.A.Wewon'llB. will staythe game, we 'B. winsgo to the park if itrain B. don' t)6. If yourainreC. staysll give him aC. wonD. stayedsurprise

10、.D. winningtomorrow.C. doesn' t rain D.more careful, youmuch better.A. doB. will doC. are doingD. did)7. If thereno buyingand selling of animals,thereA. is; will beC. is; is)8. I ' m waiting formyfriend. Ifheno killing in nature.B. will be; will beD. will be; isswimming alone.A. doesn '

11、t come; goC. won' t come; will go二、翻译B. won ' t come; goD. doesn ' t come; will go9.如果明天不下雨，我会去看你的。If ittomorrow, Iyou.10.如果Mary不为考试做准备，她会不及格。If Marythe exam, shefailthe exam.11.如果你不告诉我原因，我会告诉妈妈这件事。12.我不会去医院的，除非你和我一起去那儿。众享乐学： 咨询电话:400-811-6688念享乐学【参考答案】Grammar focus1 .如果；假如；条件状语从句2 .逗号3 . 一般现在时主将从现练习：C Bunless练习：ADExercises一、单项选择1-5 ADCBC6-8 BAD二、翻译9. doesn ' t rain;