人教版八年级上册Unit 10 If you go to the party-第2课时（Section A Grammar Focus-3c）课件(共28张PPT)

(共28张PPT)
Unit 10
If you go to the party,
you’ll have a great time!
Section A Grammar
Focus-3c
Learning objects
Topic: whether to join the party or not
Important point: talk about consequences
Difficult point: the use of conditional adverbial
clause(条件状语从句) and modal verb “should”
Review
If you go to the party with Karen and Anna, you’ll have a good time.
If you wear jeans to the party, the teachers won’t let you in.
If you take the bus to the party, you’ll be late.
If you don’t go to the party, you will be sorry.
Lead-in
If I bring a cell phone to school, what will happen
If you do,
you will be punished(惩罚) by your teacher.
What will happen if I don’t take an umbrella on a rainy day
If you do,
you will get wet all over.
What will you do if it’s a sunny day
If it’s a sunny day,
I will take a trip on the field.
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.
Grammar Focus
If
Q: What do these sentences
have in common
ll
If
ll
If
won’t
If
ll
Should
一、If引导的条件状语从句
1. If意为“如果”，引导条件状语从句时，既可在
主句前，也可在主句后。若放在句首，从句后面
要加逗号与主句隔开。
例：如果你去那儿，我也会去。
________________________
If you go there, I’ll go, too.
Grammar
If +…,
条 件
结 果
2. 句型结构：
从句
主句
I’ll / you’ll +…
3. 时态：
主句是一般将来时，从句一般现在时。
主句是有情态动词may/might/can/must/
should等句子，从句一般现在时。
If he comes, he will bring his violin.
If you want to lose weight, you must eat less bread.
主句是祈使句，从句一般现在时。
Don’t carry the box if you are not strong enough.
4. 句型转换
（1）借助“祈使句+and/or +句子（一般将来时
结构）” 来转换。其中，在句意上and表
示顺承；or表示转折，意为“否则”。
If you work hard, you’ll pass the exam easily.
=Work hard, and you’ll pass the exam easily.
=Work hard, or you won’t pass the exam easily.
（2）借助without或with来转换条件状语从句。
If there is no water, fish will die.
=Fish will die without water.
1. Call me if Tina ______ (will come/comes).
comes
2. She must see a dentist if she ____ (has/will have)
a toothache.
has
3. Have a good rest if you ____ (will be/are) tired.
are
4. What ___________ (happen) if we climb the tree
will happen
随堂精练
5. If it _____ (rain) tomorrow, we __________
(not go) hiking.
6. If you wear jeans to the party, the teachers
_______(be) angry.
7. Don’t ______ (bring) food to school.
8. We are going to _____ (ride) bikes to school.
rains
won’t go
will be
bring
ride
二、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 smoking.
（2）should表示要求或命令。
You shouldn’t talk in class.
（3）should表示预测或可能。
His school bag should be in the classroom.
（4）should有时表示说话人的感情，如惊讶、
愤怒、失望等。
Why should I go
2. 基本句式
肯定句：sb. should +动词原形+其他.
Maybe he should say sorry.
否定句：sb. shouldn’t +动词原形+其他.
You shouldn’t smoke in the hospital.
一般疑问句：Should sb.+动词原形+其他
Should you come here tonight
3a
Read the passage quickly and find out the answers below.
Who wrote this letter
Who is the letter for
Why does the person write the letter
What are some worries the person has
Let’s check the answers
Who wrote this letter
Who is the letter for
Why does the person write the letter
What are some worries the person has
Tina.
Su Mei.
She wants to ask for some advice on Mike’s birthday party.
To go or not to go; What to wear; How to get there.
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.
know
do
think
go
will be
upset “难过；失望；沮丧”
be upset about /at sth.因某事而难过
be upset with sb. 对某人感到不快
拓展: v. 使烦恼；打乱；扰乱
e.g. The bad news upset him.
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
told
have
wear
will look
go
walk
take
will take
will be
taxi n.出租汽车；的士
advice 不可数名词， “劝告；建议”
a piece of advice 一条建议
拓展: ask sb for advice 征询某人的建议
give sb some advice on…
给某人一些关于……的建议
follow/ take one’s advice
听取/采纳某人的建议
1. If I get up late tomorrow, _______________
_____________________.
2. If I don’t finish my homework, ___________
_____________________.
3b
Complete the sentences using your own ideas.
the school bus
will be angry
my teacher
I will miss
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 ______________
________________________.
be strong
computer games all the day
make them upset
I play
I won’t
I always
Summary
If 引导的条件状语从句的用法
情态动词 should 的用法
1. 如果明天不下雨，我就和同学们去野餐。　
If it doesn’t rain tomorrow, I will have a picnic with my classmates.
Take some exercise if you want to lose weight.
2. 如果你想减肥 (lose weight)，就锻炼身体吧。
Translate the following sentences into English.
综合精练
3. 如果冬天来了，春天还会远吗？
4. 如果可能的话，我就去火车站接你。
If (it is) possible, I’ll meet you at the train station.
If winter comes, can spring be far behind
5. 你们应该为下周的英语考试做准备。
You should prepare for the English exam
next week.
6. 杰瑞说他不应该玩太多电脑游戏。
Jerry said he shouldn’t play computer games too much.