人教版八年级上册 Unit 10 If you go to the party, you'll have a great time!Section A Grammar Focus-3c 课件 (共17

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Unit 10 If you go to the party,you’ll have a great time!
Section A (Grammar Focus-3c)
一句话中的时间、地点、原因、方式、程度、目的、条件等就是句子的状语，起副词作用
I like it very much.
Hong Kong is not very cold in winter.
He goes to school by bus.
To catch the train ,we got up at 5.
如果这个状语是由句子充当的，我们就将这个句子称为状语从句。
When you grow up,what do you want to be
When I got off the bus,I fell down.
When I was in China,I visited many places of interests.
She will set off for home as soon as she hears from her mother.
Sam isn’t leaving until next Wednesday.
时间状语从句
I like eating fruit and vegetables,because they are good for my health. 原因状语从句
Although many students like to watch sports,games shows are the most popular. 让步状语从句
He got up so early that he caught the bus.结果状语从句
Bring Ms.Steen to the party without telling so that she can be surprised.目的状语从句
If you go to the party,you’ll have a great time!
If you wear jeans to the party, the teachers won’t let you in.
If he goes to England, he will haveto learn English.
If you take the bus to the party, you’ll be late.
You’ll be late if you don’t hurry up.
You’ll be late unless you hurry up.
[（点拨]unless连词,意为“除非；如果不”,用于引导条件状语从句。unless可与if引导的否定的条件状语从句进行同义句转换）
请同学们观察，1.条件状语从句的位置，2.主句和从句分别是什么时态3.引导词
If从句既可放在主句前，也可放在主句后。
放在主句前，要用“,”与后面的主句隔开。ou’ll have a great time!
ou’ll have a great time!
if引导的条件状语从句
Grammar Focus
If you go to the party,you’ll have a great time!
You’ll be late if you don’t hurry up.
一、if引导的为条件状语从句，要遵循“主将从现”原则，即主句为将来时态时，从句使用一般现在时表达将来的意思。
If it doesn’t rain tomorrow, we will go to the zoo.
从句还可以是祈使句或含有情态动词的陈述句。
主句谓语部分含有情态动词（may, might, can, must, should等）。
If you eat bad food, you may fall ill.
If you study hard, you can get good grades.
主句为祈使句。
If the light is red, wait for a minute.
If you want to pass the exam, please work hard.
if引导的条件状语从句
3.引导词：引导条件状语从句的连接词有if ,unless,as/long as等
只要
句型转换
借助“祈使句+ and/or + 句子（一般将来时）”
and表顺承
or表转折,意为‘否则”
If you study hard, you will pass the exam.
= Work hard, and you will pass the exam.
= work hard, or you won’t pass the exam.
如果你努力学习,你将会通过考试.
=You won’t pass the exam unless you study hard.
Grammar Focus
If you do, you’ll be late.
If you do, you’ll be sorry.
If they have it today, half the class won’t come.
If we ask people to bring food, they’ll just bring potato chips and chocolate.
主句
如果……, ......将会……
一般现在时
一般将来时
从句
Grammar Focus
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.
Read and answer.
1.Who wrote the letter
2.Who is this letter for
3.Why does the person write the letter
4.What worries does the person has
3a Fill in the blanks with the correct forms of the verbs in brackets.
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. Mike ______ (tell) us to wear nice clothes, but I
know
do
go
will be
told
think
3a Fill in the blanks with the correct forms of the verbs in brackets.
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
have
wear
will look
go
walk
will take
take
will be
3b Complete the sentences using your own ideas.
1. If I get up late tomorrow, _______________________________________
2. If I don’t finish my homework, __________________________________
3. If I don’t get enough exercise, ___________________________________
4. I will not have enough time to study if _____________________________
5. I will not make any friends if ____________________________________
I will be late for school.
the teacher will be angry.
I will be fat.
I watch TV too much.
I am too shy.
3c 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.
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.There is going to ________ a soccer match next Sunday. If it __________, we’ll have to cancel(取消) it.
A. be; will rain B. have; will rain C. be; rains D. have; rains
2.If she _________ harder, she will catch up with us soon.
A. study B. studies C. will study D. studied
3.I’m waiting for my mother. __________, I’ll go shopping alone.
A. If she comes B. If she will come
C. If she doesn’t come D. If she didn’t come
4.I don’t know if he __________ to the party. If he _________, I’ll tell you.
A. comes; comes B. will come; will come
C. comes; will come D. will come; comes
5. If you don’t go to the party this friday, __________.
A. he will, too B. he won’t, either
C. he does, too D. he doesn’t, either
C
B
C
D
B
Exercises