Unit 10 Grammar--If conditional clause（课件）(共19张PPT) 人教版英语八年级上册

(共19张PPT)
Hands up if you're down to get down tonight.
I'm in if you're down to get down tonight.
Let's hang out if you're down to get down tonight.
If 条件状语从句
1
用法
2
结构
3
时态
4
句型转换
_____it rains tomorrow, we ______stay at home.
如果明天下雨，我们就呆在家里。
假如我有时间，我就去看你。
______I have time,
I _____ go to see you.
探索发现
1
用法
If 是引导词，意为 “_______”，由if引导的条件状语从句，表示主句动作发生所需要的条件。
If 的位置灵活，可以放在______。放在句首时，从句和主句用______隔开。也可直接放在主句后面
2
结构
语法复习：if 条件状语从句
Unit 10
Grammar--If conditional clause
Revision about words
Activity 1
If you know all the words, you will feel easy to learn English.
If you know the words, please hand up!
If you try your best, you will get good grades.
grammar
Activity 2
If you know all the words, you will feel easy to learn English.
If you know the words, please hand up!
=Hand up if you know the words!
If you try your best, you can get good grades.
Grammar--If conditional clause
if 条件状语从句
1,if 是句子的引导词，引导_________
2,if 引导的从句的位置________
3,if 条件状语从句，时态特点__________
2. If it ____ (be) cold tomorrow, I will wear my sweater.
3. He can go home if he (finish)his homework.
finishes
1. Put up your hands if you _____ (have)any questions.
is
have
4. If he _______ (study)hard, he will catch up with us soon.
5. If I don’t wear a uniform, what (happen)
6. If you help me with my English, I ________ (not fail)the exam.
studies
will happen
won’t fail
won’t fail
Exercises
3
时态
If she doesn’t come, she will be sorry.
If you don’t hurry up, you’ll miss the train.
Have a good rest if you are tired.
Don’t wait for me if I am late.
If you want to be healthy, you must exercise .
If it stops snowing, we can go out.
1、当主句是将来时时，从句要用一般现在时。
2、当主句为情态动词作谓语时，从句要用一般现在时。
3、当主句为祈使句时，从句要用一般现在时。
用条件状语从句时要注意时态的正确使用。
Exercises
3. Don’t get up too late if you ________ catch the early bus.
A. want to B. wants to C. will want D. will want to
1. --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
2. If you _____ill, you ______ go to see a doctor
A. are, should B. will be, can
C. will be , should D. are, will
He won’t go to the party unless he finishes his homework.
=If he doesn’t finish his homework, he won’t go to the party.
4
句型转换
unless=if not
Dear,don't come______I telephone you.
Dear, don't come____I _____ _________you.
( )1.My little son won't go to sleep _____ I tell him a story every night.
A.when B.if C.unless D.because
（）2. Milk quickly goes bad______it's put in the fridge.
A. if B. unless C. weather D. until
（）3. Unless we ______ the problem,we won't be happy.
A. solve B. will solve C. solved D. solving
4. If I don't finish my homework, my teacher will be angry with me.（用unless转化句子）
_________________________________________________
Exercises
Summary
Homework
必做
1, Try your best to recite the words!
2, Finish the exercise about if conditional clause.
分组作业
1组：完成AB卷unit10 练习题
2组：AB卷单项选择题，完形填空和词语运用
3组：课时练unit10 每课时短语一英译汉
Thank you