初中英语条件状语从句 课件 (共42张PPT)

(共42张PPT)
Adverbial Clause of Condition
条件状语从句
If you are happy
If you are happy and you know it clap your hands
If you are happy and you know it clap your hands
If you are happy and you know it never be afraid to show it
If you are happy and you know it clap your hands
If you are happy and you know it stomp your feet.
If you are happy and you know it stomp your feet.
If you are happy and you know it never be afraid to show it
If you are happy and you know it stomp your feet
If you are happy and you know it wink your eye
If you are happy and you know it wink your eye
If you are happy and you know it never be afraid to show it
If you are happy and you know it wink your eye
If you are happy, what will you do
If I am happy, I will smile.
If you become sad, what will you do
If I become sad, I will cry.
She is doing her homework.
If you are hard-working,
you will get good grades.
She gets good grades.
If you play computer games on weekdays ,
you’ll be very tired in class
your parents will be sad.
you won’t get good grades.
your eyes will be poor
She will be late.
If she _____ to school, she _____ ___late.
She is going to
walk to school.
walks
will
be
位置：从句可放在主句之前或之后，但是放在主句之前须有逗号隔开
eg:如果我有足够的钱，我就去环游世界
If 引导条件状语从句
定义：if “如果, 假如” 它引导的句子表示某事发生所需的条件，即“在…条件下，某事才能发生”，在句子中充当状语，因此称之为条件状语从句。（ If引导的条件状语从句表示假如有从句的动作发生，就会有主句动作的发生 ）
If I have enough money, I will travel around the world
=I will travel around the world if I have enough money
If条件句：条件句用于陈述语气，表示假设的情况可能发生，
其中 if 是“如果”的意思。
主句一般将来时 ，从句用一般现在时。
构　　成 条件从句 主　　句
时　　态 If＋一般现在时 主语＋shall/will+动词原形
例　　句 If he comes, he will take us to the zoo.
用法：
1. 如果主句是一般将来时，从句则用一般现在时。
If it rains（从句）， I will stay at home.
I’ll go with you if you don’t want to go alone（从句）.
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。
If you drive too fast, you may have an accident.
You must stop if the traffic is red.
If you finish the homework， you can go home．
如果你作业做完了就可以回家了。
If you want to lose weight you must/should eat less bread.
如果你想减肥，你必须少吃面包。
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
Please call me if he comes next Sunday.
1. 如果主句是一般将来时，从句则用一般现在时。
If it rains（从句）， I will stay at home.
I’ll go with you if you don’t want to go alone（从句）.
2.如果主句含有must, may, can 等情态动词，从句也要用
一般现在时。
If you drive too fast, you may have an accident.
You must stop if the traffic is red.
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your
homework.
Please call me if he comes next Sunday.
if条件状语从句结构及时态
Revision
练一练：
1。如果她早点儿起床，就有时间在家里吃早餐
If she____ ____a little earlier, she’ll have time to eat
breakfast at home.
2。如果你参加聚会，你将会过得很开心。
If you____ the party ,you_____ ____ a great time.
3。如果明天下雨，我们将不去野餐
If it ____tomorrow, we ___ ____ for a picnic.
4。如果你经常听英文歌，你将会喜欢英语
If you often ____ ___English songs, you___ ___English.
gets up
join will have
rains won’t go
listen to will like
1.If he____________ (not, do it ), I___________(do) it.
2.If you ____ (be) late for school ,my teacher ________(be) angry.
are
will be
3 If she________ (win) the prize ,we _______(be) happy.
wins
will be
4.If I _________ (not,eat )so much ,I _________(get) thinner.
5.If you ______(tell) them, they _____________ (not,believe) you.
don’t eat
will get
tell
won’t believe
6 I _________(stay) at home,If it __________( rain).
7.If it ____________(not,rain) ,I _________( go) out.
8. we __________(play) football, If it is _________(sun) .
9.If she __________(become) a star ,her parents ____________ (not,send) her away
10.He _________(watch) TV ,if he ______(be) free.
will stay
rains
doesn’t rain
will go
will play
sunny
becomes
won’t send
will watch
is
doesn’t do
will do
2.You may ______ (pass) the exam if you ___
(study) hard.
rains
will stay
pass
study
3. If you want to record, ________(press)
the red light.
press
1.If It______ (rain) tomorrow, I ______(stay)
at home.
Fill in the blankets with the proper form
1.I’m sure if he _____(go) to the party, he________ (have) a great time.
2.If the rain _______(stop) tonight, we will go to the cinema.
3.I’ll buy a computer if I ______(have) enough money.
4.You _________(not get) nervous if you _____(do ) enough exercise.
6.I want to know if he _________(come) tomorrow, if he _______(come), I __________(give) the massage to him.
goes
will have
stops
have
won’t get
do
comes
will come
will give
If I’m ill,
__________________.
I will see a doctor
Look and say
If I’m late,
_________________.
I will say sorry
If I’m hungry,
I will______________.
If I’m tired,
I will_____________.
Look and say
eat some food
have a rest

If it rains tomorrow,
I_____________________.
will watch TV at home
If it _____________ tomorrow,
________________.
I’ll play basketball
doesn’t rain
I won’t________________.
play basketball
If you are free this weekend,
what will you do
If I am free ,…
sleep
watch TV
play computer games
practice
If you want to get good marks,
do what Don’t do what
If you want to get good marks, __________.
If you want to get good marks,
don’t __________.
study hard
listen to teachers carefully.
do homework by yourself.
copy your homework.
talk in the class
cheat in the exams
If you have enough pocket money, what will you buy
If I have enough pocket money,
I ____________________.
If you invite foreigners to China, where will you go
I will go to _________,
if I invite foreigners to China.
Mount Tai
West lake
Hainan
Game Rules
Topic 1: If I am happy, ……
A: If I am happy, I will go shopping.
B: If I go shopping, I can buy some clothes.
C: If I can buy some clothes, I will spend much money.
D: If I spend much money, ……
E: …..
【比一比】：一分钟内，根据所给话题，看同学们能接出多少条件状语从句。
【注意】在句子接龙时，主句与从句变换时，要注意从句时态的变换，从句用一般现在时。
If 条件句的替代形式：
（1）祈使句 + and/or + 陈述句（谓语动词通常用将来时态）。其中，and表示句意顺承；or表示转折，意为“否则”。
e.g. If you work hard, you’ll pass the exam easily.
= Work hard, and you’ll pass the exam easily.
If you don’t work hard, you’ll fall behind others.
= Work hard, or you’ll fall behind others.
（2）用介词with, without的替代形式：
e.g. If there is no water, the fish may die.
= Fish may die without water.
If you help me, I’ll finish my task on time.
=With your help, I’ll finish my task on time.
Activity 1 Rewrite the sentences with if:
Listen in class, or you won’t understand what to do.
If you don’t listen in class, you won’t understand what to do.
1) Eat breakfast, or you’ll get hungry at school.
2) Hurry up! We’ll be late!
If you don’t eat breakfast, you’ll get hungry at school.
If you don’t hurry up, we’ll be late.
Activity2.Complete the sentences
— I want to get high scores.
— If __________________________(work hard/ do well)
you work hard, you will do well.
1.-how can I remember my friends’ birthdays
-If_______________________________________
(keep a note in your diary / not forget).
2.-It’s late, but I don’t want to go to sleep.
-If _______________________________________
(not get enough sleep/ feel tired at school).
you keep a note in your diary, you won’t forget.
you don’t get enough sleep, you’ll feel tired at school.
If 在宾语从句中翻译为“是否”
If 在条件状语从句中翻译为“如果”
I’ll go to see you if I am free next week.
I want to know if he is a teacher.
whether
1. if 在句中的含义不同
2. if 在从句中的位置不同
If 引导的宾语从句放在主句之后；而if引导的状语从句可放在主句之前也可放在主句之后
= If it doesn’t rain, I will go out tomorrow.
I will go out tomorrow if it doesn’t rain.
I don’t know if the train has arrived.
If 引导的条件状语从句放于句首时多用逗号隔开；而if引导的宾语从句则不能。
3. 时态要求上有区别
If 引导条件状语从句的时态为一般现在时 记住“主将从现”
1.I want to know if there a sports meeting next month.
doesn’t rain
will be
2.If it doesn’t rain ,we’ll go out
If 引导的宾语从句的时态由主句及本身时态决定；
1. Can you tell me if she can come to the meeting
2. She will not go there if it is rainy tomorrow.
3. I can’t guess if she will be angry .
4. If we help each other , we will get good results .
1 If I _______________(not understand）, I will ask my teacher for help .
If I __________(copy ) your homework , I will cheat myself .
3 If she _______________(not get ) up early , she’ll miss the early bus .
4 If your mother_______ (buy) the book for you , it will be good for your study.
don’t understand
copy
doesn’t get
buys
5. If you ____________(not work ) hard , you _________(not pass) the exam.
6. If your brother ____________(break) the window , he will feel very sorry for that .
7. If the computer (not work), mend it please .
don’t work
won’t pass
breaks
doesn’t work
8. If she _______(not be) interested in math, she will find it very boring .
9. If you _________(get ) high scores, your parents will be proud of you .
10. If you _________(be) happy , we will be happy .
isn’t
get
are
.
I want to know if he _______(come)tomorrow, if he _______(come), I __________(give) the message to him.
comes
will come
will give
if的用法
2.引导条件状语从句：译为“如果，假如”
(1) if从句+祈使句
(2) if从句+主句（一般将来时）
(3) if从句+主句（含有情态动词）
1.引导宾语从句：译为“是否”，表示不确定的概念。
I don’t know if your father can come together .
Can you tell me if miss your parents
Homework
Writing：任选一个话题，写一篇小文章。
要求：不少于字数60词；
尽可能多地用条件状语从句来表达。
If you are happy
If you are happy and you know it clap your hands
If you are happy and you know it clap your hands
If you are happy and you know it never be afraid to show it
If you are happy and you know it clap your hands
If you are happy and you know it stomp your feet.
If you are happy and you know it stomp your feet.
If you are happy and you know it never be afraid to show it
If you are happy and you know it stomp your feet
If you are happy and you know it wink your eye
If you are happy and you know it wink your eye
If you are happy and you know it never be afraid to show it
If you are happy and you know it wink your eye
1.If you _____ to the party, you’ll have a great time.
A. will go B. went C. go D. going
2． I ____ her the answer if she ____me.
A.can tell, will ask B. will tell, will ask
C. would tell, ask D. will tell, asks
C
D
3. – What are you going to do tomorrow
--We’ll go to the library tomorrow if it ___.
A. isn’t rain B. rain C. won’t rain D. doesn’t rain
4. What will you do if you _____ to the old folk’s home visit
A. go B. went C.going D. will go
A
D
5. If I eat ____ food, I’ll be very fat.
A. too many B. many too C. too much D. much too
6. I’ll give the book to him if he ___ here next Sunday.
A. will come B. comes C. is coming D. came
7. There ____an English film in our school tomorrow.
A. is going to have B. will have
C. is going to be D. has
8. Could you tell us where ____？
A. will the next Olympic Games held
B. the next Olympic Games will be held
C. would the next Olympic Games be held
D. the next Olympic Games would be held
C
C
B
B