(共31张PPT)
人教新目标版 八年级上册
Unit 10 If you go to the party, you’ll have a great time!
Section A Grammar Focus-3c
Learning objectives
Knowledge objectives:
1. 熟练掌握以下词汇和短语
upset; taxi; advice; get up late; study for my English exam.
2. 熟练掌握以下句型
1. —What will happen if they have the party today
—If they have it today, half the class won’t come.
2. I don’t know what to do about going to Mike’s birthday party tomorrow night.
3. Can you give me some advice please
Skill objectives:
1. 掌握本课短语和句型，初步认识“If 条件状语从句”的结构。
2. 熟练掌握if条件状语从句中的主从句及其时态，能熟练运用if表达条件，用will表达结果。
3. 通过3a和3b练习，进一步巩固知识。
Emotional objectives:
准确应用“If 条件状语从句”句型，有礼貌地与他人进行交流。
Thinking quality objectives:
通过语法结构的学习,思考如何运用语法结构帮助我们提高英语的听、说、读、写的能力。
Let’s enjoy a song and find out the if-clauses!
Warm up
If 引导的条件状语从句
Conditional
sentences
Review
If you go to the party with Karen and Anna, you _________ (have) a great time.
If you ________(wear)jeans to the party, the teachers __________(not let) you in.
wear
won’t let
will have
If you _____(take) the bus to the party, you________(be) late .
If you ________ (not go) to the party, you ________(be) sorry.
take
will be
don’t go
will be
Look and say
Sentence pattern transformation.
He is going to walk to school.
He will be late.
We can say:
If he _______ to school, he _____ ____ late.
walks
will be
We can also say:
He _____ ____ late if he _______ to school.
walks
Tips: if在主句前，用逗号隔开。 if在主句后，则不用逗号。
will be
从句
主句
Look and say
Sentence pattern transformation.
It is going to rain tomorrow.
I will stay at home.
If it _____ tomorrow, I _____ _____ at home.
rains
will stay
We can say:
We can also say:
I _____ _____ at home if it _____ tomorrow.
rains
will stay
从句
主句
Practice
If it ____ sunny tomorrow, they _____ ______ a trip.
It will be sunny tomorrow.
They will have a trip tomorrow.
is
will have
If he _______ study hard, he ____ _____ the exam.
doesn’t
will fail
He will fail the exam.
He won’t study hard.
Translate these sentences and let’s read.
Grammar Focus
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.
我认为我要乘公共汽车去参加聚会。
如果你这样做，你会迟到的。
我认为我会呆在家里。
如果你这样做了,你会很遗憾的。
如果他们今天开派对将会怎么样？
如果他们今天开派对，一半的学生将不会来了。
我们应该要求人们带食物吗？
如果我们要求人们带食物，他们将只会带薯片和巧克力。
Grammar Focus
Grammar focus
Read the following sentences and find sentences including “If… will…”.
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.
Predict the consequences.
What are these sentences’ function
一、句子的类型
简单句
复合句
指包含一个主语(或并列主语)和一个谓语(或并列谓语)的句子。
陈述句
疑问句
祈使句
感叹句
This is a dog.
Is this a dog
Open your eyes!
What a beautiful girl it is!
由一个主句和一个或多个从句构成的句子。
从属连词+句子=从句 名词性从句 宾语从句，主语从句
表语从句，同位语从句
形容词性从句 定语从句
副词性从句 状语从句
二、状语从句
要想了解状语从句，那么首先得知道什么是状语。简单的说，状语通常由______充当或_______________________充当，副词可以在句子中修饰动词、形容词、副词或整个句子，表明方式，时间，地点、程度等，副词一般译成____________。
副词
相当于副词的短语和句子
如：I go to work by car. (介词短语作方式状语)
He runs fast. (副词作程度状语)
He came yesterday. 他昨天来了。（副词作时间状语）
I usually play football in the afternoon. （介词短语作地点状语）
In order to catch up with my classmates.I must study harder. (不定式作目的状语)
Without his help,we couldn't work out the problem in time. (介词短语作条件状语)
“……地/得”
◆ 用一个句子做状语，这个句子就叫状语从句。
如：While John was watching TV, his wife was cooking. (时间状语从句)
We must camp where we can get water. (地点状语从句)
He didn’t attend classes yesterday because he was ill. (原因状语从句)
We must do as the teacher tells us. (方式状语从句)
I turned off the TV so that my sister could study. (目的状语从句)
The child is so young that he can’t go to school. (结果状语从句)
If it rains tomorrow, I will take my umbrella. (条件状语从句)
Even if/though it is raining, we will go there. (让步状语从句)
He plays football as well as his brother. (比较状语从句)
从上面的例子可以看出，状语从句种类繁多，一般可分为9大状语从句：时间/地点/原因/方式状语从句（帮助记忆：when/where/why/how）；目的/结果状语从句；条件/让步状语从句；比较状语从句。初中阶段主要掌握：时间状语从句、条件状语从句、原因状语从句、结果状语从句、目的状语从句、让步状语从句、方式状语从句。
三、if 引导的条件状语从句
If是连词，表示假设或条件，意为 ____________________，表示将会发生和可能发生的事，或进行提醒警告。引导条件状语从句，既可放在主句_____，也可放在主句_____。若if条件句放在句首，从句后面要加______与主句隔开。
“如果；假如；倘若”
前面
后面
逗号
如：如果你去那儿，我也会去。
______________, I’ll go, too.
我妈妈如果有空，就会带我去公园
My mother will take me to the park ____________.
If you go there
if she is free
If条件状语从句的复合句中主从句的时态
if引导的条件状语从句要遵循“主将从现”的规则。即if引导的条件状语从句，主句用一般将来时(用will形式，不能用be going to形式)，从句用一般现在时。
主句是一般将来时，从句用一般现在时。
如：If I go to the party, I’ll have a great time.
I’ll have a great time if I go to the party.
从句
主句
一般现在时
一般将来时
从句
主句
一般现在时
一般将来时
句子结构：If+从句,主句.=主句+if+从句.
主将从现
如：If you eat bad food, you may fall ill.
主句谓语含有情态动词may/might/can/ must/should 等，从句用一般现在时。
从句
主句
一般现在时
含情态动词may
If the traffic lights are red, you must stop and wait.
从句
主句
一般现在时
含情态动词must
You can pass the exam if you work hard.
从句
主句
一般现在时
含情态动词can
如果主句是祈使句，那么从句通常要用一般现在时。 (即主祈从现)
如：If the light is red, wait for a minute.
从句
主句
一般现在时
祈使句
If you want to have a chat , call me up.
Don’t wait for me if I am late.
从句
主句
一般现在时
祈使句
从句
主句
一般现在时
祈使句
主祈从现
有些句子可与含if的条件状语从句互相转换。
有if引导的条件状语从句的复合句中，当主句和从句的主语均为you时，可转换为“祈使句，and+简单句”或“祈使句，or(否则)+简单句”
如：If you study hard, you’ll pass the exam easily.
_____________, _____ you’ll pass the exam easily.
Study hard
If you don’t hurry up, you will be late again.
__________, _____ you will be late again.
Hurry up
or
and
You will be healthier if you eat well.
_________, _____ you will be healthier.
Eat well
and
借助介词with 或without来转换。
如：You can’t drive the car if the door is open.
You can’t drive the car __________________.
with the door open
If there is no water, fish will die.
Fish will die _____________.
without water
With your help, I’ll finish my job soon.
_____________, I’ll finish my job soon.
If you help me
一、完成句子。
Exercises
(1) Put up your hands if you _____ (have) any questions.
(2) If it ____ (be) cold tomorrow, I will wear my sweater.
(3) He can go home if he ________ (finish) his homework.
(4) 如果他来了，我们会让你知道的。
If he ________, we ________ you know.
(5) 如果天不下雨，她会开车来我家的。
If it ___________, she _________ to my home.
finishes
have
is
comes will let
doesn't rain will drive
二、单项选择。
1. If I go to the movies, I______ my homework on time.
A. didn’t finish B. don’t finish C. won’t finish D. finish
2. — I don’t remember the teacher's telephone number.
— If you______，we can call her for help.
are B. will C.do D. did
3. If it ______sunny tomorrow, I will go shopping with my friend in the supermarket.
A. will be B. be C. is D. was
4. — Can students go online during lessons
— They can ______ it is for the lesson.
if B. or C. so D. but
4) You will see many aunts dancing together on the square if it ____ in the evening.
A. doesn’t rain B. rains C. will rain D. won’t rain
A
C
C
C
A
三、根据句意及括号内所给词语的提示填空。
1. What ____________(happen) if Mr. Smith ________(arrive) late
2. If it ____________(not rain) tomorrow, I ________(visit) my grandparents.
3. If there _____(be) fewer trees, there _______(be) more pollution.
4. If he __________(come) to the tea party, please let me know.
5. I'm waiting for my friend. If she _____________(not come), I ___________________(go shopping) alone (独自).
6. You __________(not get) good grades if you __________ (not work) hard.
will happen arrives
doesn't rain will visit
are will be
comes
doesn’t come
won’t get don’t work
will go shopping
3a
Fill in the blanks with the correct forms of the verbs in brackets.
upset adj.难过；失望；沮丧
taxi n.出租汽车；的士
advice n.劝告；建议
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 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
know
do
think
go
will be
tells
have
wear
will look
go
walk
will take
take
will be
Language points
1. Can you give me some advice please （教材P75 3a）
(1) advice 与 suggestion 两者都可表示“建议”，其区别如下：
advice 不可数名词。表示“一条建议”用 a piece of advice。 I asked my teacher for some advice/ a piece of advice.
suggestion 可数名词，复数形式为suggestions。 I asked my teacher for some suggestions/ a suggestion.
(2) 与advice 相关的一些词组：
give sb. some advice 给某人一些建议
ask sb. for advice 征求某人的意见
take/follow sb.’s advice 听从某人的意见
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 …
It is called “Chain Reaction(连锁反应)” or “Butterfly Effect（蝴蝶效应）”.
Chain game
If I have 100 yuan, I will buy some books.
If I buy some books, I will read them every day.
If I read books every day, I will get good grades.
If I get good grades, my parents will be happy.
If my parents are happy, I will get more money.
If I get more money, I will buy more books.
Let’s play “If” game!
Homework
1. Do the exercises in students’ book.
2. Preview the new words and phrases in Section B(1a-1e).
谢谢
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