广东省深圳市 Module 3 Unit 6 Travelling around Asia Grammar 课件

课件34张PPT。Unit 6 Travelling around Asia
if 引导的条件状语从句

(Conditional sentences)Grammarbe free tomorrow, play basketballIf I am free tomorrow, I’ll play basketball.I’ll play basketball if I am free tomorrow.doesn’t rain tomorrow, play footballIf it doesn’t rain tomorrow, I’ll play football.I’ll play football if it doesn’t rain tomorrow.finish one’s homework, go swimming If I finish my homework, I’ll go swimming.I’ll go swimming if I finish my homework.if引导的条件状语从句观察下列例句，总结if引导的条件状语从句的用法。
【例句】
1. If you stand in the rain, you get wet.
2. You get wet if you stand in the rain.
3. If it doesn’t rain tomorrow, I will plant
some flowers in my garden.
4. I will plant some flowers in my
garden if it doesn’t rain tomorrow.if 引导的条件状语从句【总结】
1. if意为 “____”， 引导____状语从句。当表示条件成立就必然有某种结果（常用于客观真理）时，主句和从句都用________时（例1、2）
For example:
1) If you stand in the rain, you get wet.
2) You get wet if you stand in the rain. 如果条件一般现在当表示条件成立就可能有某种结果时，如果主
句用_________时，则从句用_________时，
简称“主将从现”（例3、4）。
For example:
3) If it doesn’t rain tomorrow, I will plant some flowers in my garden.
4) I will plant some flowers in my garden if it doesn’t rain tomorrow.一般将来一般现在2. 当if引导的从句在主句之前时，____（用/不 用）逗号隔开两个句子（例1、3）；当主句在从句之前，则____（用/不用）加逗号（例2、4）。
【例句】
1) If you stand in the rain, you get wet.
2) You get wet if you stand in the rain.
3) If it doesn’t rain tomorrow, I will plant
some flowers in my garden.
4) I will plant some flowers in my garden if it
doesn’t rain tomorrow.
用不用 在 if 引导的条件状语从句中，还要注意前后时态一致的原则。Tips:Conditional sentencesIf you walk along the Bund，
you will see many old buildings.The if-clause talks about a possible action.The main clause talks about the likely result.we can also put the if-clause after the main clause. You will see many old buildings
if you walk along the Bund.Main clauseif-clauseWork out the ruleThe verb in the if-clause is in (the simple
present tense/the simple future tense).
The verb in the main clause is in (the
simple present tense/the simple future
tense).√√A William’s mum is giving him advice about his problems. Match the half-sentences from the boxes to complete her advice for him.
William’s problems
I sometimes bring the wrong books to
school.
If you check your timetable every night，you will know which books to bring.2. I was away from school today. I do not know what homework to do.If you call your friends, they will tell you what homework to do.3. I hate getting up. I always feel tired in the mornings.If you go to bed early, you will not feel tired in the mornings.4. I do not know what this word means.
If you look it up in the dictionary, you will find out its meaning.B Carol is giving advice to Henry. What is she saying? Use the pictures and the words in brackets to help you.__________________ the wheels round, they_______________ easily.(make/turn)If you makewill turn2.The seeds ______________________
in the soil.(grow/plant)will grow if you plant them3. ____________ another wing, it
____________.(put on/ fly)If you put onwill fly4. ________________ your coat, you __________ so cold. (put on/not feel)If you put onwill not feel5. The meat _______________________
in the fridge. (not go bad/put)will not go bad if you put it 6. You __________________________
your classes. (see clearly/wear)will see clearly if you wear “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。”
记记这个顺口溜吧！Exercises一、判断下列句子的正误，如果有误，
在后面的横线上更正。
1. If you will do more exercise this
summer, you will be very fit.
___________________
2. The candle burns, if you light it.
___________________
will do → do把逗号去掉/ If you light it, the candle burns. 3. I will build many schools for the poor
children if I win a billion dollars.
__________________

4. If you freeze water, it will turn into ice.
__________________

5. My uncle visits the school if he will
have time.

__________________正确will turn →turns visits →will visit/can visit
will have →has 二、选择最佳答案填空。
1. If he _____ hard, he will get good grades.A. study B. studies
C. will study D. studied
2. If you _____ water, it _____ steam.
A. boil, will become
B. boil, becomes
C. to boil, will become
D. will boil, becomes BB 3. Everyone must dress up. If you ____,
they won’t let you in.
A. don’t B. won’t
C. can’t D. mustn’t
4. Mary will go to Sanya if she ____ a
five-day trip.
A. have B. had
C. will have D. hasAD5.If it _____ tomorrow, we _____ hiking.
A. don’t rain, will go
B. will rain, go
C. doesn’t rain, will go
D. doesn’t rain, go
6.He_____ if it _____ fine tomorrow.
A. not leave, isn’t
B. doesn’t leave, will not
C. doesn’t leave, isn’t
D. will not leave, isn’t CD 三、根据中文意思完成句子。
1. 如果你不运动，你就会变胖。
If you ____ ____ exercise, you ____ ____ ___.
2. 如果我早点完成作业，我就会早点睡。
I ____ ____ to bed early if I _____ my homework early.
3. 如果植物得不到足够的水，它们就长不好。
If plants _____ _____ enough water, they _____ _____ well.don’t dowill get fatwill gofinishdon't getdon't grow四、用括号内所给单词的正确形式填空。1. A fish ______(die) if you ______(take) it out of water for a long time.
2. — Jack wants to know if they _________
(have) sports meeting tomorrow?
— Yes. But if it ______(rain), they _________ (have) lessons instead.
3. If you ______(drop) the bowl to the ground, it _________(break).
4. You _____________(succeed) if you
try ________(study) hard.
dies takewill have rains will have drop
will break will succeed
to study五、用if将句子连接起来, 注意动词的适当形式。
1. You heat the ice. It melts.

2. You pour water onto the fire. It is put out.

3. You go to bed late tonight. You will feel
tired tomorrow.
If you heat the ice, it melts. If you pour water onto the fire, it is put out.If you go to bed late tonight, you
will feel tired tomorrow. 用if将句子连接起来, 注意动词的适当形式。
4. You are not tired. Let’s go for a walk.

5. We will go climbing tomorrow. It won’t rain.

If you are not tired, let’s go for a walk.If it doesn’t rain tomorrow, we will go climbing.