Unit 10 If you go to the party, you'll have a great time! Self-check & Revision 教案 人教版八年级英语上册

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Unit 10 If you go to the party, you'll have a great time! Self-check & Revision 教案 人教版八年级英语上册

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Unit 10 If you go to the party, you'll have a great time! Section B Self-check&revision 教学设计
教学目标:
正确运用if引导的条件状语从句。
能用if引导的条件状语从句作出假设,用will谈论结果。
掌握if引导的条件状语从句的三种时态。
教学重难点:
正确运用if引导的条件状语从句。
教学过程:
新课导入
Are you going to the party tomorrow night
Yes, I am.
Who will you go with
I think I’ll go with Karen and Anna.
If you go to the party, you will have a great time.
师:我们来看这句话:If you go to the party, you will have a great time.如果你去参加聚会,你将会玩得很开心,“你去参加聚会”是条件,这样做的结果是“你将会玩得很开心”。这就是我们今天要来学习的if引导的条件状语从句。
探究新知
条件状语从句表示主句动作发生的条件,常由if引导,表示假如有从句的动作发生就会有主句的动作发生。
定义
if表示“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。
师:也就是说,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。
主从句的位置
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
例:If I have enough money, I will travel around the world.
如果我有足够的钱,我就去环游世界。
=I will travel around the world if I have enough money.
时态呼应
师:if引导的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。
如果主句是一般将来时,从句则用一般现在时。
例: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)
如果主句含有must, may, can 等情态动词,从句也要用一般现在时。
例: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.
如果主句是祈使句,从句同样要用一般现在时。
例:Don’t go and play football if you don’t finish your homework.
Please call me if he comes next Sunday.
if的两面性
if引导条件状语从句时意为“如果”,如果引导宾语从句则意为“是否”。请比较:
例:1) We will go out if it is fine tomorrow.
2) I don’t know if the train has arrived.
师:句1) 中if引导的是状语从句。这个从句表示“条件”,修饰主句。整个句子的意思是“如果明天天气好,我们就出去”。
句2) 中if引导的是宾语从句,充当谓语动词don’t know的宾语,整个句子的意思是“我不知道火车是否到了”。
巩固练习
(1) 选一选
1. you don't go to bed earlier, you will feel tired in the morning.
A. Unless B. If C. Though D. Until
2. Talk to your teacher and you will get help you have a problem.
A. unless B. if C. until D. So
3. The children will climb the hill if it tomorrow.
A. won't rain B. didn't rain C. isn't raining D. doesn't rain
4. We wonder if our teachers to our graduating party next weekend. If they _we' ll be very happy.
A. will come; will come B. come; will come C. will come; come D. come; come
(2)填一填
1. If she (get up)a little earlier, she’ll have time to eat breakfast at home.
2.If you (walk)distracted, you may fall down.
3.Don’t forget tell me if he (not come) tomorrow.
课堂小结
今天我们学习了if引导的条件状语从句,知道了它的定义及主从句的位置,最主要的是它的时态分为三类:主将从现、主祈从现、主情从现,还和if引导的宾语从句做了区分,你学会了吗?我们下节课再见!

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