Unit 10 If you go to the party, you'll have a great time! 第2课时 Section A（Grammar Focus-3c）课件 2023-20

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Unit10
If you go to the party, you’ll have a great time!
人教新目标版 八年级(上)
Section A
Grammar Focus-3c
Learning Aims
文化意识:
培养学生客观推测的意识。
03
思维品质:
培养观察法总结归纳的能力。
04
学习能力:
熟练掌握if条件状语从句中的主从句及其时态。
02
语言知识:
能熟练运用if表达条件，用will表达结果。
01
一、新课引入
Look at the pictures and make sentences with “if”.
Revision
If you go to the party with Karen and Anna, you’ll have a good time.
If you take the bus to the party, you’ll be late.
If you don’t go to the party, you will be sorry.
Look and say
Warming up
If it is… this weekend, I will…
read at home
go to the park / museum / cinema
play football
visit my grandparents
…
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.
Lead in
If you have a robot, what will you do
If I have a robot, I will let it…
help with the housework.
babysit my little brother.
wake me up in the morning.
teach me English after school.
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 you take the bus to the party, you’ll be late.
If you stay at home, you’ll be sorry.
为避免重复,条件状语从句常用助动词do(does/did)来替代上文所提到的动作。
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.
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……
一般现在时
一般将来时
1. 定义
if “如果”. 引导条件状语从句时,既可放于主句前面,也可放于主句后面.若放于主句前,从句要加逗号与主句隔开.
eg: 你如果去聚会, 将会玩得很开心.
If you go to the party, you will have a good time.
或 You will have a good time if you go to the party.
2. 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 _____ (get) up late,he_____ (be) late for school.
如果你想聊天，打我电话。
If it_____ (rain) tomorrow，I _________ (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.
gets
will be
rains
will stay
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。
__________ (not wait) for me if I _____ (be) late.
如果我迟到，就别等我。
改同义句：
want
call
Don't wait
am
Call me up if you want to have a chat.
If I am late,don't wait for me.
注意：if引导的条件状语从句通常不用一般将来时。
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 _____ the exam if you _____ (work) hard.
如果你努力学习，你就能通过这次考试。
You must _____ if the traffic light ____ (be) red.
如果交通灯是红色，你必须停下来。
改同义句：
pass
work
stop
is
If you work hard,you can pass the exam.
If the traffic light is red,you must stop.
注意：if引导的条件状语从句通常不用一般将来时。
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____ below zero, water ____ (turn) into ice.
=Water ____(turn) into ice if the temperature____below zero.
is
turns
turns
is
3. 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.
努力学习,你将会通过考试.
3. 句型转换
借助with/without
1. 如果没有水,鱼将会死.
If there is no water, fish will die.
= Fish will die without water.
2. 有你的帮助,我将很快完成工作.
If you help me, I’ll finish the work on time.
= with your help, I will finish the work on time.
Grammar Focus
if
条
件
状
语
从
句
用法
表示主句动作发生
所需要的条件。
位置
主句在前，从句在后，
中间没有逗号。
从句在前，主句在后，
中间有逗号。
时态
主将从现
主情从现
注意
在条件状语从句中，
if的含义为“如果”，
时态是主将/情/祈从现。
当if的含义为“是否”时，
时态要根据实际情况选择。
主祈从现
【单项选择】
________ we deal with our problems, we can easily become unhappy.
A. Until B. If C. Unless D. Though
C
解析：Unless we deal with our problems, we can easily
become unhappy.
= ____ we ______ deal with our problems, we can
easily become unhappy.
If don’t
2. —Mrs Li, will you be angry ________ your students don’t obey the rules in class
—A little. But I will stop them in a friendly way.
A. if B. unless C. though
3. ________ you drive, you mustn’t drink wine at all.
A. If B. Unless C. Though
A
A
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
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)
know
do
think
go
will be
3a
upset. Mike ______(tell) us 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
will take
take
will be
What are Tina’s worries
To go or not
What to wear
How to get there
Can you give her some advice
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.
give consequences
give conditions
3b
1. I’ll be late for school.
2. My parents will be upset.
3. I’ll become very heavy.
4. I play chess after school every day.
Possible answers
5. I don’t go to my friends’ parties.
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, ...will/won’t...
interesting
imaginative
creative
logical
3c
1．get up late起床晚了。【拓展】stay up late熬夜到很晚。
2．enough exercise足够多的锻炼。enough在此为形容词，意为“足够多的”。修饰名词时既可放在名词之前，也可放在名词之后，但是放在名词之前居多。当enough作副词时，则用来修饰形容词或副词，常放在被修饰词的后面。
Language points
3．advice n．劝告；建议。它是不可数名词，表示数量时要借助于piece或some、much等词。常用搭配：a piece of advice一条建议；two pieces of advice两条建议；take one’s advice 采纳某人的建议。例：My teacher often gives
me some advice on how to learn English well.我的老师常给我一些如何学习英语的建议。
【拓展】suggestion是advice的同义词，但suggestion是可数名词。
【拓展】
（1）固定搭配：give sb some advice(on/about…)
=give advice to sb(on/about…)给某人提（关于……的）建议；take one’s advice 接受某人的劝告。
Let me give you a piece of advice.
（2）advise为动词，意为“忠告，建议”，常构成“advise sb to do sth”;同义词为suggest。
He advised me to stop smoking.
Language points
【活学活用】
1. —What_________ can you give me on learning math
—I think you could do more exercises.
A. advice B. news C. messages D. information
2. We should take our teachers’ _______ and make use of _______ to study.
—I think you could do more exercises.
A. advices; times B. advice; time
C. advice; times D. advices; time
A
B
4.…they’ll be too lazy to cook.
……他们会太懒惰而不做饭。
too…to…意为“太……而不能……”，其中too为副词，后面接形容词或副词；to为不定式符号，后面接动词原形。该结构可以与“so…that…(如此……以至于……)”进行互换，其中so后面接形容词或副词，that后面接否定句。
Linda is too tired to walk.
=Linda is so tired that she can’t walk.
句型转换
Mary is so short that she can’t reach the apples on the tree.（改为同义句）
Mary is ______ short _____ reach the apples on the tree.
too to
我都 学会了!
本课句型
Summary
Summary
一、用括号内所给单词的适当形式填空。
1．He doesn't get enough ________ (exercise), so he isn't healthy enough.
2．I learnt how __________ (ride) a bike at the age of 7.
3．If she __________ (come) here earlier, she can catch the school bus.
4．Can you give me some _________ (advice) about improving my English
5．The girl wearing jeans at the party looked the __________ (bad)．
exercise
to ride
comes
advice
worst
Exercises
1.If it rains tomorrow, we _____ visit the museum.
A. don’t do B .won’t go to
C .aren’t go to D. didn’t go to.
2. Will you go to the park if it ____ fine
A. will be B. was C. is D /
3. If you __to school late, your teacher _____ angry with you.
A. come; are B. come, will be
C. will come; are D. will come; will be
4. If you _____ hard, you will ___ successful.
A. work, are B. works, is
C. to work, be D. work, be
5. If I ____ too much TV, my mother will _______.
A .watch, angry B .watched, be angry
C .watch, be angry D .will watch, be angry
B
D
C
C
B
二、单项选择。
6. I think my mother ________ if she _______free tomorrow.
A. will come; is B. comes; is
C. comes; will be D. will come; will be
7. If she likes it, she _______ it soon.
A. read B. reads C. will read D. reading
8. He will go out with you after he _______ his homework.
A. finishes B. will finish C. is finishing D. finish
Exercises
C
A
A
三、用所给词的正确形式填空。
Exercises
1.If he _______(come) to the party, he will have a good time.
2.We don’t know if it ________(rain) tomorrow; if it _______(rain), we ________(not go) out.
3.If it’s sunny tomorrow, Mary ___________(visit) the Great Wall.
4.If you _____(come) at 4:00 in the afternoon,
I _______________(begin) to be happy at 3:00.
comes
will rain
rains
won’t go
will visit
come
will/shall begin
四、根据中文意思完成句子，一空一词。
1．这裙子太贵了，我没有足够的钱买下它。
The dress is too expensive, I don’t have __________ money _________ it.
2．如果下雨，我就待在家里。
I ____________ at home if it _________ .
3．他昨天乘公共汽车去上学。
He ________________ school yesterday.
4．别穿牛仔裤去上体育课。
Don’t _______________ the P．E.class.
enough　
to buy　
will stay　
rains　
took the bus to　
wear jeans to　
5．有时候我会感到沮丧，但是我不会放弃。
Sometimes I will _____________，but I won’t give up.
6．我的老师常给我一些如何学习英语的建议。
My teacher often gives me ________________ how to learn English.
7．他们昨天在公园玩得很开心。
They _______________________ in the park yesterday.
feel upset　
some advice on　
had a great/good time　
Homework
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 some sentences with “if”. Pass the paper around twice. Then read the story.