初中Grammar教学设计

Unit 4 Growing up Grammar

【课前导学】

请找出下列句子的共同点，并翻译成中文。

1. It started to rain when we were at the park.

2. The telephone rang while the girl was doing her homework.

3. Don’t forget to turn off all the lights before you leave the house.

4. I will not start to cook dinner until you come back from work.

5. All the boys rushed out of the classroom as soon as the bell rang.

你还可以给出点例子吗？

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【课堂学习】

1. Check the answers, and choose some students to write their examples on the blackboard.
2. Lead-in

Ask some students translate some sentences.（可以小组竞赛）

1. 请在下午两点之前到达学校。
2. 自从3年前，我就离开北京了。
3. 你一到南京就打个电话给我。

3. Presentation

（一）before , after,  when and while

Read and translate:

(1).He remained there for about a year before the NBA took notice of him.

(2).After he graduated, he was forced to play in another basketball league.

(3).When he finally got the chance, he scored 20 points in his first game.

(4). While attending junior high, Spud tried out for the school team.

Ask : who can say anything about before,after,when and while?(小组讨论)

Conclusion: how to use them？（见课件）

Before：  at an earlier time than

After :    at a later time than

when 既指时间点，也可指一段时间； 

while 只指一段时间，因此when引导的时间状语从句中的动词可以是短暂性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。    

Practice

（二）since，until and till

小组合作，讨论一下我们以前所学的有关它们的知识，看看哪个小组说的全面。

再次给出解释（见课件）

since 译作“自从…以来” (1)接时间点

                                                (2)接一段时间 + ago

                                                (3)接时间状语从句

Till and until mean up to a certainly time. Until can be placed at the beginning or in the middle of the sentence, but till is usually used in the middle of the sentence.

（1）用于肯定句作“直到……为止”解时，主句的动词一般是延续到until / till表示的时间为止

（2）在“not...until...”句式中不能用till替代

（3）句首通常只用until,不用till

Practice

(三) using as soon as and whenever

   1. How to use as soon as

As soon as means when something happens, or a short time after something has happened

   2. How to use whenever

Whenever means at any time

Let students discuss first, and then give some examples.(见课件)

   Practice : part c1 and c2

4. Group work

Discussion:

小组合作，就school rules 这个话题展开讨论，

尽量使用我们课文中所学的连词。

如：We have to … as soon as…

比一比：哪个小组列举的最多

【课后拓展】

1. 请翻译下列句子

（1）       自从他搬到这里以来，他已经交了好多朋友了。

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（2）       当他在吃晚饭时，他的朋友来了。

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（3）       直到你学会了物理，你才会知道它多有用。

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（4）       请你一到办公室就给经理打电话。

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（5）       无论我什么时候经过他们的房间，他们总是吵吵闹闹的。

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2. 选择正确的连词填空。

（1）Jim has been in the factory for three years ______ he left school.

（2）Mike is good at playing basketball _______ Bruce does well in football.

（3）This coat will not lose colours _________ it’s washed.

（4）I will not believe you _________ I see it with my own eyes.

（5）I must finish the work _________ I go home.

（6）The big clean-up began ________ the typhoon passed away.

（7）The students were talking ________ the teacher came in.

3.  句型转换

（1）The teacher will tell him the news at once when he arrives at the school.（同义句）

     The teacher will tell him the news _______ _______ _______ he gets to school.

（2）He went to bed after 2 a.m. （同义句）

     He _______ go to bed _________ 2 a.m.

（3）Jack’s teacher asks him, “ can you see the blackboard?” (合并)

     Jack’s teacher asks him ________ _________ _________ see the blackboard.

（4）My father is a farmer. My mother is a farmer, too.(同义句)

      _________ my father ________ my mother_________ farmers.

（5）The girl was so young that she couldn’t take care of herself.(同义句)

      The girl was not ___________ ___________ to take care of herself.