鲁教版(五四制)(2024)if条件状语从句课件(共28张PPT)

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鲁教版(五四制)(2024)if条件状语从句课件(共28张PPT)

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(共28张PPT)
if条件状语从句
如果我有三个愿望,我会做什么?
变得有钱
如果我有钱,我就可以吃小龙虾不用考虑它的价格。
长高
我的学生都爱我, 爱学习
如果我的学生都爱我,爱学习,那么他们就能学好英语。
如果我变高了,我就可以呼吸到更新鲜的空气了。
如果:
请帮我圆梦
如果我有钱,我就可以吃小龙虾不用考虑它的价格。
If I am rich, I can eat crayfish without considering its price.
if conj.
如果我长高了,我就可以呼吸到新鲜的空气了。
If I grow taller, I can breathe fresh air.
如果:
请帮我圆梦
if conj.
如果我的学生都爱我,爱学习,他们就能学好英语。
If my students all love me and studying, they will learn English well.
如果:
请帮我圆梦
if conj.
如果我有钱,我就可以吃小龙虾不用考虑它的价格。
如果我的学生都爱我,爱学习,那么他们就能学好英语。
如果我变高了,我就可以呼吸到新鲜的空气了。
如果……
条件
if
If I am rich, I can eat crayfish without considering its price.
If I grow taller, I can breathe fresh air.
If my students all love me and studying, they will learn English well.
1. 引导词
(1) if 表示在某条件下,某事很可能发生
含义:“如果”
If I grow taller, I can breathe fresh air.
If I am rich, I can eat crayfish without considering its price.
If my students all love me and studying, they will learn English well.
条件状语从句的概念:
由引导词______引导的状语从句叫做条件状语从句,即 ”在......条件下,某事才能发生。“即,“在······条件下,
某事才能发生,”在句子中充当状语,因此叫
状语从句。
if
1. If it doesn’t rain tomorrow, we’ll go to the Great Wall.
2. Telephone me this evening. I‘ll be at home.
3. He won't go swimming.
4.If you ask him,he will help you.
判断下列语境是否使用条件状语
I can breathe fresh air if I grow taller.
从句在前加逗号
从句在后无逗号
条件状语从句的结构特征
通常:从前_________,从后_________。
有逗
无逗
If I grow taller, I can breathe fresh air.
If引导条件状语从句的位置。
当if引导条件状语从句时,既可以放在句中,也可以放在句首。但当if引导的条件状语从句放在句首时,从句后面要加逗号与主句隔开。
eg.You will have a great time you go to the party.
= you go to the party you will have a great time.
if
If
,
如何判断主句和从句?
不管if在句首还是句中,紧跟在if后面的句子是从句,反之,另一句是主句。
eg. 1、
you love me.
you love me,
I love you.
I love you
2、
If
If
______________
________________
________________
______________
从句
主句
从句
主句
1. If you are not too tired, let’s go out for a walk.
2. I will travel around the world if I have enough money,
3. If it rains tomorrow, we won’t go on a park.
4. If the rain stops, I shall go out for a walk.
5. You will keep healthy if you do more exercise.
请用 “_____” 划出下列句子的主句,用“ ” 划出句子的从句。
知识点导入
If she has free time,she will help
her mum do housework.
知识点导入
If my father is free, he will go camping with me.
If it doesn’t rain this weekend, we will have a picnic.
知识点导入
知识点小结
If she has free time, she will help her mum do housework.
If my father is free, he will go camping with me.
If it doesn’t rain this weekend, we will have a picnic.
if引导的句子叫作____________,表示在某种
条件下某事将发生。主句的时态是__________,
从句时态是___________,即_________。
一般将来时
条件状语从句
一般现在时
主将从现
知识点探究
If he studies hard, he can get good grades.
主句中用了情态动词_______,if 引导的
条件状语从句是_____________,即条件
状语从句的另一个特点____________。
一般现在时
can
主情从现
知识点探究
If you feel very tired, go to bed early.
主句是_______,而if从句是
____________,即__________。
一般现在时
祈使句
主祈从现
主将从现
主情从现
主祈从现
1. We will stay at home if it rains tomorrow.
2. If you finish your homework, you can go home now.
3. Tell me the truth, if you want me to help you.
主句:
主句:
主句:
一般将来时
情态动词
祈使句
主将从现
主情从现
主祈从现
总结 :
从句都是一般现在时!
从句:现在时
从句:现在时
从句:现在时
课程小结
主句 if从句 时态规律
一般将来时 一般现在时 主将从现
有情态动词 一般现在时 主情从现
祈使句 一般现在时 主祈从现
if引导的条件状语从句
( ) 1. She will go if it ______ tomorrow.
A. isn’t rain B. doesn’t rain C. don’t rain D. doesn’t rainy
( ) 2. We ______ if it ______ sunny tomorrow.
A. will swimming; is B. will swim; will be
C. will are; will be D. are going to swim; is
B
D
( ) 4. Please show me the way if you ______ it.
A. know B. knows C. known
A
将下列句子改为由if引导的条件状语从句
It will rain tomorrow. We don't go to the park.
_________________ _
将下列句子改为由if引导的条件状语从句
It will rain tomorrow. We don't go to the park.
_______________ ___
答案: If it rains tomorrow, we won't go to the park.
按要求完成下列各题,每空一词。
Finish your homework and you can watch TV.
(改为条件状语从句)
______ you finish your homework, you ______ watch TV.
按要求完成下列各题,每空一词。
Finish your homework and you can watch TV.
(改为条件状语从句)
_____ you finish your homework, you ______ watch TV.
答案:If, can

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