Unit 10 If you go to the party, you'll have a great time Section A Grammar Focus-3c课件(共24张PPT，含内嵌视频)

(共24张PPT)
Unit 10
If you go to the party, you’ll have a great time!
Section A (Grammar Focus~3c)
Revision
Look at the pictures and make sentences with “if”.
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 for school.
If you don’t go to the party, you
will be sorry.
能通过推理演绎，判断if条件句引出的对事情结果的预测。
1
能学会运用“if 引导的条件状语从句+主句will+ do”结构来谈论因果关系。
2
分组朗读并观察下列句子。
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.
Divide the whole class into 4 groups and
each group discusses one question.
1 组
2 组
3 组
4 组
Group 1：先阅读课本P120，观察表格第二列的句子，划出简单句。
Group 2：先阅读课本P120，观察表格第二列的句子，划出从句和主句。
Group 3：观察表格第二列的句子，if引导的条件状语从句的句子结构是什么
Group 4：观察表格第二列的句子，其中主句和从句分别是什么时态？你有什么发现？
提前完成的小组可思考其他问题，稍后可做补充回答。
目标一: 能学会运用“if 引导的条件状语从句+主句will+ do”结构来谈论因果关系
讨论时间过后，请第一、二组的同学派代表依次回答下面的问题。
Activity 1
Group 1：先阅读课本P120，观察表格第二列的句子，划出简单句。
Group 2：先阅读课本P120，观察表格第二列的句子，划出从句和主句。
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.
简单句
简单句
If
If 是连词，意思是如果；假若；倘若
通常表示假设，表示将会发生和可能发生的事，或进行提醒警告。
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.
从句
主句
如果……, 将会……
Summary 1
句子的类型
类别 构成 例句
简单句 The Simple Sentence 由一个主语（或并列主语）和一个谓语（或并列谓语）构成的句子。 I get up at six in the morning.
My mother and I often go shopping.
Some students walk or ride bikes to school.
复合句 The Complex Sentence 由一个主句和一个或多个从句构成的句子。 What do you want to be when you grow up
I think (that) Screen City has the most comfortable seats.
讨论时间过后，请第三、四组的同学派代表依次回答下面的问题。
Activity 2
Group 3：观察表格第二列的句子，if引导的条件状语从句的句子结构是什么
Group 4：观察表格第二列的句子，其中主句和从句分别是什么时态？你有什么发现？
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.
从句
主句
如果……, 将会……
句子结构：If+从句+主句。
Summary 2
if引导的条件状语从句
状语从句（Adverbial Clause） 是指句子用作状语时，起副词作用的句子。 状语从句根据其作用可分为时间、地点、原因、条件、目的、结果等从句。 状语从句一般由连词(从属连词)引导，也可以由词组引起。
While John was watching TV, his wife was cooking. （时间状语从句）当约翰看电视时，他的妻子正在做饭。
He didn’t attend classes yesterday because he was ill. （原因状语从句）他病了，所以他昨天没有来上课。
He got up so early that he caught the first bus. （目的状语从句）他很早起床以便赶上第一班公共汽车。
We’ll start our project if the president agrees. （条件状语从句）
如果总统同意，我们将开始我们的项目。
if条件状语从句的定义：if引导的从句在复合句中表示条件，作主句的条件状语，称为条件状语从句，表示假如从句的动作发生，主句的动作就(不)会发生。
if条件状语从句的位置：
if引导的条件状语从句既可以放在主句前，也可以放在主语后，若if从句在主句前，用逗号与主句隔开；若if从句在主句后，中间不用任何符号。
句子结构：If+从句+主句=主句+if+从句。
（从句谈论可能的活动，主句谈论可能的结果）
It will be sunny tomorrow.
We will have a trip tomorrow.
We will have a trip if it is sunny tomorrow.
If it is sunny tomorrow, we will have a trip.
主句在前从句紧跟其后
从句在前时，用“,”与主句隔开
If引导的条件状语从句的时态
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.
从句
主句
如果……, 将会……
一般现在时
一般将来时
Summary 3
If引导的条件状语从句的时态:
1.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。 (即主将从现)
注意：if引导的条件状语从句通常不用一般将来时。
If he gets up late,he will be late for school.
如果你想聊天，打我电话。
If it rains tomorrow，I will stay at home.
如果明天下雨，我将呆在家里。
改同义句：
He will be late for school if he gets up late.
I’ll stay at home if it rains tomorrow.
2.如果主句是祈使句，那么从句通常要用一般现在时the simple present tense。 (即主祈从现)
If you want to have a chat, call me up.
如果你想聊天，打我电话。
Don't wait for me if I am late.
如果我迟到，就别等我。
改同义句：
Call me up if you want to have a chat.
If I am late,don't wait for me.
3.如果主句是含有must，can，may 等情态动词时，根据需要从句多用一般现在时the simple present tense。(即主情从现)
You can pass the exam if you work hard.
如果你努力学习，你就能通过这次考试。
You must stop if the traffic light is red.
如果交通灯是红色，你必须停下来。
改同义句：
If you work hard,you can pass the exam.
If the traffic light is red,you must stop.
4.表示真实条件、客观真理、自然现象、定理定义、 民间谚语等，句型是：If + 句子 （一般现在时 ），+ 主句 （ 一般现在时）.(即主现从现)
必然的结果
the result that will certainly happen
如果温度低于零摄氏度, 水就会变成冰。
If the temperaturet is below zero, water turns (turn) into ice.
=Water turns(turn) into ice if the temperature is below zero.
3a
Fill in the blanks with the correct forms of the verbs in brackets.
Activity 3
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
told
have
wear
will look
go
walk
will take
take
will be
advice是不可数名词，不能说a advice, 而是a piece of advice，
“两个建议”，我们通常说two pieces of advice.
注意：piece要采用复数，advice不可数，但piece可数。
我们也可以说为some pieces of advice一些建议。
与advice有关的一些词组：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
辨析：advice与suggestion
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.
目标二: 能通过推理演绎，判断if条件句引出的对事情结果的预测
Activity 1
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 miss the school bus
my teacher will be angry
I won’t be strong
I play computer games all the day
I always make them upset
Activity 2
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 story:
If I get up at 9:00 tomorrow, I’ll be late. If I am late, the teacher will be very angry. If the teacher is very angry, he will call my mother. If he calls my mother, she will cry. If she cries, I will be sad. If I am sad, I will eat a lot. If I eat a lot, I will be very fat. If I am very fat, I won’t be handsome. If…
学习目标
通过本堂课的学习，你学到了什么？
能学会运用“if 引导的条件状语从句+主句will+ do”结构来谈论因果关系。
1
能通过推理演绎，判断if条件句引出的对事情结果的预测。
2