Unit 10 If you come to my party, you'll have a good time. Section A(Grammar Focus-3c) 课件

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Unit 10
If you come to my party, you'll have a good time.
Section A(Grammar Focus-3c)
A:What will happen if you …?
B: If I…, …
stay up late last night
A:What will happen if you …?
B: If I…, …
don’t dress warmly enough
I think I'll take the bus to the party. If you do, you'll be late.
I think I'll stay at home. If you do, 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 we ask people to bring food？ If we ask people to bring food, they'll just bring potato chips and chocolate.
if 引导的条件状语从句
（1）“主将从现”原则。
当主句用一般将来时时，if引导的条件状语从句用一般现在时，我们称之为“主将从现”原则。




Johnson won’t answer the phone if he________ the number.【广东】
A. knew B. will know
C. doesn’t know D. didn’t know
C
（2）如果主句含有must, may, can等情态动词，if引
导的条件状语从句也用一般现在时。

（3）如果主句是祈使句，if引导的条件状语从句
同样用一般现在时。
此结构也可转化为：祈使句+ and/or + 一般将来时。
eg: If you work hard, you will pass the exam.
= Work hard, and you will pass the exam.
如果你努力学习，你就能通过考试。
★if从句的时态根据实际情况而定。
eg: I don’t know if he will come to school tomorrow.
我不知道明天他是否来学校。
No one tells me if Tom went out last night.
没人告诉我汤姆昨天晚上是否出去了。
拓展
if作“是否”讲，引导宾语从句的用法。
—Celia, join us in the Super Summer Camp if it _______ this weekend.
—I’d love to. But nobody knows if it .
A. is fine; rains B. is fine; will rain
C. will be fine; will rain D. will be fine; rains
B
1.We _______ (go) to the zoo if it ___________ (not rain) tomorrow.
2.If you helped me with my English , I __________ (not fail) the exam.
3.If I ___________ ( not finish )my homework, my mother________ (be) mad at me .
4.I _______ ( return) the CDs to you ,if I ______(have) time tomorrow .
5.I don’t know if it ________(rain) tomorrow, if it _________(rain) , I _______(not go )out .

will go
doesn’t rain
wouldn’t fail
don’t finish
will be
will return
have
will rain
rains
won’t go
should的用法
1. should为情态动词，意为“应该；应当”，后接动词原
形，无人称和数的变化。
（1）should意为“应该”，表示劝告或建议。
You should stop eating junk food. 你应该停止吃垃圾食品了。
（2）should表示要求或命令。
You shouldn't eat in class. 你不许在课堂上吃东西。
（3）should表示预测或可能。
He should be in the classroom.
他可能在教室里。
（4）should有时表示说话人的感情，如惊讶、愤怒、失望等。
Why should I go? 为什么是我去？
2.基本句式
肯定句：sb. should +动词原形.
Maybe you should say sorry. 也许你应该说对不起。
否定句：sb. shouldn't +动词原形.
You shouldn't eat in the classroom.
你不应该在教室里吃东西。
一般疑问句：should sb.+动词原形?
Should she come here this afternoon? 下午她应该来这里吗？
Dear Su Mei,
I don’t ______ (know) what to ______ (do) about going to Mike’s birthday party tomorrow night. My parents _____ (think) I should study for my English exam next week. If I _____ (go) to the party, they _______ (be) upset.
3a
Fill in the blanks with the correct forms of the verbs in brackets.
know
do
think
go
will be
Mike ______ (tell) us to wear nice clothes, but I don’t ________ (have) any. If I _______ (wear) jeans, I _______ (look) the worst. Also, I’m not sure how to ______ (go) to the party. If I ______ (walk), it ________ (take) me too long. If I _______ (take) a taxi, it ______ (be) too expensive. Can you give me some advice please?
Tina
tells
have
wear
will look
go
walk
will take
take
will be
（1）advice 作“建议”讲时，是不可数名词，
而suggestion是可数名词。
一条建议: piece of advice; a suggestion
一些建议：some advice / suggestions
advice /?d'va?s/ n.劝告；建议
（2）advice的常用短语
give sb. some advice 给某人一些建议
give advice on sth. 在某方面给出建议
take/follow sb.'s advice 听从某人的建议
ask sb. for advice 向某人征求意见
My parents always give me some good advice when I am in trouble.
当我遇到困难时，父母总会给我一些好的建议。
I think you'd better follow your friend's advice.
我认为你最好听从你朋友的建议。
—Could you please offer me some ______in my research?
—Yes, sure.
A. idea B. message C. suggestion D. advice
D
典例
Complete the sentences using your own ideas.
3b
1. If I get up late tomorrow,
.
2. If I don't finish my homework,
.
3. If I don't get enough exercise,
.
I’ll be late for class
the teacher will be angry with me.
I’ll not be very healthy.
4. I will not have enough time to study if
.
5. I will not make any friends if
.
I watch TV after school.
I am too shy.
Write a story with your group on a piece of paper. The first person begins the story with “I think I will...” The others add sentences with “if”. Pass the paper around twice. Then read the story.
3c
I think I will go to the movies tonight. If I go to the movies, I won't finish my homework. If I don't finish my homework ...
1. — Can you guess if they______ to play basketball with us?
—I think they will come if they ______ free.
A. come；are B. will come；will be
C. will come；are D. come；will be
C
2. Learning to write is learning to think. You will know things more clearly ______ you write them down.
A. or B. unless C. if D. whether
3. If Nick ______ home too late, he his favorite cartoon.
A. gets; misses B. gets; will miss
C. will get; misses D. will get; will miss
C
B
4. I wonder if he _____ to the movies with me .
A. will go B. goes C. go D. to go
5. I don’t know if he _____, if he _____, we will be very happy .
A .comes; will come B . will come; come
C . will come; comes D . will come; will come
A
C

本节课主要学习if引导的条件状语从句以及should的用法。
Summary
谢谢
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