英语八年级上册Unit 10 if条件状语从句语法课件（共有PPT22张）

(共22张PPT)
Unit 10——条件状语从句
每日一句——中考常用谚语积累
He laughs best who laughs last.
笑到最后才笑得最好。
中考三大从句
状语从句
宾语从句
定语从句
I will have many wives if I am an emperor.
复合句
连接词引导的是从句
主句
从句
什么是状语？？？
I study English.
I study English well.
I study English at Hanlin.
I study English on Saturday.
状语：修饰谓语动词，用于说明时间、地点、原因、方式、条件、目的、结果等状况的成分。副词通常作状语。
什么能作状语？？？
I study English well.
I study English at Hanlin.
I study English on Saturday.
I study English because I love it.
状语从句：用句子作状语就把这个句子称作状语从句。
副词
介词短语
介词短语
句子
状语从句的分类
What were you doing when the rainstorm came
Wherever you go, I will wait for you.
He can’t go with us because he was ill.
Although he is ill, he still goes to school today.
I get up early so that I can catch the first bus.
You are so young that you can’t play online games.
If I am an emperor, I will have so many wives.
时间
地点
原因
让步
目的
结果
条件
时间状语从句
让步状语从句
条件状语从句
地点状语从句
目的状语从句
结果状语从句
原因状语从句
状语从句
主将从现原则
主句是一般将来时、祈使句或含情态动词时，从句要用一般现在时表将来。
If you jump, I will jump.
主将从现
If you jump, I will push.
主将从现
you jump, I will jump.
you jump, I will push.
主句
If
If
如何区分主从句：
1. 找连接词
2. 连接词引导的句子为从句，反之为主句。
复合句
从句
连接词If：如果
If引导的条件状语从句
如果我有钱，我会…
给我的爸妈买座大房子
一般将来时：
will +do
be going to +do
If I have money,
I will buy a big house for my parents.
If I have money,
I will travel around the world.
环游世界
吃遍美食
I will eat delicious food.
If I have money,
I have money,
If I have money, I will travel around the world.
If I have money, I will eat delicious food.
If
I will buy a big house for my parents.
从句
主句
一般现在时
一般将来时
时态：“主将从现”
Have a Try!!!
If I ___________(arrive) in Hongkong, I will call you.
If he __________(have) time, he is going to see the movie with me.
arrive
has
3. If you ______tomorrow，I will let you know all about it．
A．will come B．come C．came D．comes
4. It gets cold at night．_____ you don't wear your coat，
you'll catch a cold．
A．If B．How C．While D．Unless
he
1. If my brother _____ to the party, he_____a good time.
went; have B. goes; has
C. will go; will have D. goes; will have
2. If someone _________ (marry)me, he ________(be) very hopeless.
3. 如果他打电脑游戏，他的妈妈会揍（hit）他。
________________________________________________________________
4. If I will study hard, I get good grades. (找茬）
marries
will be
If he plays computer games, his mother will hit him.
will
if引导的条件状语从句
if
unless
as/so long as
条件状语从句
时间状语从句
让步…
地点…
原因…
目的…
状语从句
定语从句
宾语从句
中考复合句
三大从句
结果…
主将从现
If you are hungry, you should eat some food.
As long as it doesn’t rain, I can go camping with you.
Unless you finish your homework, you can’t go out.
Don’t laugh at me if I make a mistake.
Don’t turn on the TV unless you finish your homework.
Don’t be upset if you fail to pass the exam.
主情从现
主祈从现
1. If there _______ no buying and selling of animals, there _______ no killing.
A. is; will be B. will be; will be C. is; is D. will be; is
2. If you _______ tired, you must have a rest.
A. feel B. felt C. feeling D. feels
3. Please give him this book if he ________.
A. returned B. will return C. return D. returns
4. Don't ______ your bike to work if it _______ tomorrow morning.
A. ride; rain 　 B. ride; rains 　
C. rides; will rain D. will ride; will rain
5. Frank ______ to see his grandma if he ______ free tomorrow.
A. will come; will be B. comes; is
C. will come; is D. comes; will be
条件状语从句
连接词：if, unless, as/so long as, in case
If he has hair, he will not wear a hat.
→他如果有头发就不会戴帽子了。
Unless you call me daddy, I will tell your mother your little secret.
→除非你叫我爸爸，否则我就把你的小秘密告诉你妈妈。
You’ll get good grades as/so long as you_______(study) hard.
I will never leave you unless I _____ (die).
除非
只要…就…
万一
study
die
You will not succeed ________ you try your best.
and B. unless C. if D. as long as
2. —Would you like to go camping with us tomorrow
—Sure, I will go with you ________ it doesn’t rain tomorrow.
because B. so C if D. unless
3. You will be late for school ________ you don’t get up early.
A. as long as B. if C. and D. unless
4. The old library will close soon ________ people can give some money to it.
A. if B. unless C. because D. although
5. —The novel seems a little boring.
—You will enjoy it ________ you can feel it with your heart.
A. unless B. in case C. although D. as long as
See you!