Unit6Grammar.doc

Unit 6 Grammar：Conditional sentences学案
4

if 引导的条件状语从句
Read the sentences and work out the rule.
1.If I am happy, I will smile.
2.If it is sunny, I will play football.
3.If we are happy, we will dance.
4.They will play the guitar well if they work hard.
5.I won’t go fishing if it rains.
6We must stop if the traffic lights are red.
1.if表示 “______”的意思， 引导条件状语从句，表示假如有从句的动作发生就（不）会有主句的动作发生。 if 的条件句位置灵活，可直接放在主句后面， _____（用/不 用）逗号隔开（例4、5、6）。 ；当if引导的从句放在主句前时，_____（用/不 用）逗号隔开两个句子（例1、2、3）。
2.时态：主句用___________时， if引导的条件状语从句用__________时表示将来意义,简称“主将从现” 。
例： I will go fishing if it doesn’t rain.
一般将来时：
一般现在时：①
②
③
3. 如果主句中含有can, may, must等情态动词，从句也要用____________时。
例： We must stop if the traffic lights are red.

顺口溜：
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。

一、William’s mum is giving him advice about his problems. Match the half-sentences from the boxes to complete her advice for him.

1 2 3 4
1. If you check your timetable(课程表) every night， a. you will not feel tired in the mornings.
2. If you call your friends, b. you will find out its meaning（意思）.
3. If you go to bed early, c. you will know which books to bring.
4. If you look it up in the dictionary（字典）, d. they will tell you what homework to do.
二、 Carol is giving advice to Henry. What is she saying? Use the pictures and the words in brackets to help you.

If you _________(put on)another wing, If you ____________(put on)your coat,
it ___________(fly). you __________(not feel) cold.

The meat _____________(not go bad) You ____________(see) clearly
if you __________(put) it in the fridge. if you __________(wear)your glasses.

重点词组：
feel tired觉得累，感到疲惫 find out找到，查明（真相）
put on 穿上，装上 go bad变坏
look up 向上看；(在词典、参考书等中)查找

一、单项选择：
( ) 1. I __ the CDs to you if I have time tomorrow.
A. will return B. returned C. have returned D. return
( ) 2 He will help me with my maths if he _______ free.
A. be B. was C. is D. will be
( ) 3.I won’t watch the TV play if my father ________ me do my homework.
A. let B. will let C. won’t let D. lets
( ) 4. If he _____ hard, he will get good grades.
A. study B. studies C. will study D. studied
( ) 5. If you ____， I will go, too.
A. goes B. go C. will go D. is going
( ) 6.I’m waiting for my friends. If they___ , I’ll go shopping by myself.
A. come B. will come C. don’t come D. didn’t come
( ) 7. He __ finish the work if you _______ help him.
A. isn’t, don’t B. couldn’t, won’t
C. can’t, don’t D. doesn’t, won’t

( ) 8 .If it __ sunny tomorrow, I __boating.
A. is, go B. will be ,go C. is，will go D. will be, will go
( )9.---What will you do if it ____tomorrow. ---I’ll stay at home and watch TV.
A. rain B. rains C. will rain D. is raining
( ) 10. If it ____ rain tomorrow, we will go swimming.
A. won’t B. doesn’t C. isn’t D. don’t

二、根据中文意思完成下列句子, 每空一词：
1. 如果你穿上大衣，你就不会觉得冷。
You _________ ________ cold if you ______ _____ your coat.
2. 如果你跑快点，你就不会迟到。
You _______ _______ late if you _______ faster.
3. 如果他问我，我会告诉他答案。
If he _______ me, I _______ _______ him the answer.
4. 如果她参加这个聚会，她会过得很开心。
If she ________ ______ in the party, she ______ _______ a good time.

三、挑战中考：
( ) 1. _____ we continue继续) making too much rubbish, the problem will only get worse. (2013年广州中考题)
A. When B. Whether(是否) C. Why D. If
( ) 2. If you _______ carefully, you ______ the report well. (2009年广州中考题)
A. will listen, will be understand B. will listen, understand
C. listen, will understand D. listen, understand
3. 如果你晚上早些睡，早上就不会感觉疲惫。 (2010年广州中考题)
________ you go to bed earlier at night, you won’t __________ ________ in the morning.