The students won’t have a sports meeting this weekend if it rains
If she comes here tomorrow, I will tell you.
翻译以上几个句子。
课内探究
Step 1
If从句的构成:
If you ask him，→从句
if意为“如果”，引导条件状语从句，可放在主句后，也可放在主句前，常用逗号隔开，主将从现，选B。
2. Mary will go to Sanya if she
a five-day trip.（）
A. have B. had
C. will have D. has
if意为“如果”，引导条件状语从句,主句用将来时态，从句用一般现在时，选D
3.Please stay at home if ittomorrow.
A. rains B. rained
C. will rainD. rain
if引导条件状语从句,主句放在从句之前，主句是祈使句，从句用一般现在时，选A
精讲点拨
if引导的条件状语从句与if引导的宾语从句的区分：
1、if在句中的含义不同：
2 If you feel hungry,you should eatsomething.
3 If you are ill,you should go to see a doctor.
虚拟语气的条件或假设时，从句多用过去时或过去完成时：
If I were you,I would invite him to the party.
I will buy a car.
If I invite foreigners toChina,I will go toWestLake.
I will go toMountTai
主情从现(can may should must )：
1 If you tired ,you must have a rest.
copy homewபைடு நூலகம்rk.
cheat in the exam.
主将从现：
If it is sunny this weekend,I won’t stay at home.
I won’t watch TV.
If I have enough money,I will buy a mobile phone.
全国中小学“教学中的互联网搜索”优秀教学案例评选
教案设计
一、教案背景
1，Facing students：□Middle school22. Subject：English
2.Class hour：2
3．Before the students to：
①．Read the text early, understand the general meaning.
2.Understanding the text content, can according to the text imagination of the sentence.
教育方面：
1.To understand the conversation of talking aboutAustralia.
I would have arrived much earlierif I had not been Caught in the traffic
1. If hehard, he will get good grades.
A. study B. studies
C. will study D. studied
Step3
If从句的时态：
主祈从现：
If you want to get good marks,
study hard.
listen to teacher carefully.
do homework by yourself.
If you want to get good marks,
Don’ttalk in the class.
he will help you．→主句
如果你请他帮忙，他会帮你的。
Print the photoif you like it.如果喜欢这张照片就把他打印出来。
↓↓
主句从句
If：从属连词，意思是：“如果，假如，倘若”
Step2
If从句的位置：
if引导的条件状语从句既可以放在主句前，也可以放在主句后。从句位于主句之前时，常用逗号与其隔开。
Teaching point：
To understand the conversation of talking about Australia.教学过程：
课前延伸
设疑激趣，导入新课。
If there is no buying and selling of animals, there will be no killing in nature.
2. To learn how to introduce a famous place.
3. To learn Instructive Attributive Clauses withthat
发展方面：
Train envision ability of the students, thinking ability, language ability.
②.Review the new words, must read the pronunciation of the word.
③.Self-study dialogue, thinking about the problem of after class
二、教学课题
教养方面：
1.To read the dialogueaccurately, fluently.
三、重点难点
1.Key vocabulary :friendshipn.友谊classmaten.同班同学
in fact事实上personaladj.个人的
2.if引导的条件状语从句
四、教学方法
Bottom-up, interactive approach
五、教学过程
Explain how to import the courses, mainly the school of design, knowledge developingetc.