学案:What were you doing when the UFO arrived?

人教版八年级下册

第三单元 What were you doing when the UFO arrived?

第一课时 be + Ving(过去进行时)

    第三单元 What were you doing when the UFO arrived?

              第一课时     时态学习

我的学习目标：

1、通过对现在进行时的复习，引入对过去进行时的学习。

2、学习在单句和复合句中对过去进行时的运用。

3、学习when和while引导的时间状语从句中主从句的时态。

我的学习过程

一、生活引入

1、            课前热身

T: Good morning, boys and girls! Can you tell me what you

are doing Now?

S1:I am doing my homework.

S2:I am  writing.

…

T: Yes ,all of you did well. We are having English class. But wh-at were you doing at this time yesterday?

简易分析：

提出一个问题,让学生回答，从而引出今天的学习内容。目的是通过对现在进行时的复习，引入对过去进行时的学习.

二、基本功训练

1、知识点学习

（1）What were you doing at this time yesterday?

     We were having Chinese class.

提问：过去进行时的概念是什么？基本结构是什么？

简易分析：

比较现在进行时，归纳出过去进行时的基本结构：be(was/were)+Ving.并对比现在进行时与过去进行时及一般过去时的定义区别： 表示在过去某一时刻或某一时间段正在进行的动作。

（2）知识点2：The girl was shopping from 2o’clock to 4o’clock Last Sunday.

     He was walking down the street when the UFO arrived.

提问：两句话中，过去进行时的使用有何区别？

简易分析：

 对比过去进行时在两句话中的运用，不难看出即可运用在单句，也可运用在复合句中。引出对when 和while 引导的时间状语从句的学习。

（3）知识点3：When the teacher came in, I was reading .

              While I was reading, the teacher came in.

提问: 通过观察，归纳出When和While 的主从复合句的时态。

简易分析： 通过出示例句，让学生对比，得出when 和while 引导的主从复合句的时态的区别，同时指出这是本节课和本单元的重难点。

2、知识点演练

用when 和 while 填空。

The girl was shopping ____the alien got out.

_____ I saw the boy, he was swimming.

_____he was reading, she fell asleep.

三 题型训练

1、选择题

（1）(  )she was reading the book, an accident happened.

     A What    B While     C Who       D Where

（解析：这道题是考察引导词的选择，学生做题时应先划分出主句和从句，有题可知，此题先从句后主句，再从主从句的时态出发，从句运用了过去进行时，主句运用了一般过去时，符合while的用法，答案应选B.）

（2）Did you see a boy in a brown coat pass by just now?

  Sorry ,sir. I (  )a newspaper.

  A read    B am reading   C would read   D was reading

( 解析：此题是考察时态的选择，通过读题，我们不难看出这是一个单句，从上下文的题意可知，穿棕色外套的男孩刚才经过的时候，我正在读报纸，故应该选过去进行时D.)

2、句型转换题型

 Wu Ping does his homework at eight every day.(用yesterday替换  every day)

Wu Ping ____ ____ his homework at eight yesterday.

(解析：此题为改写时间状语题，实则改写时态，即把原来的一般现在时改写成过去进行时，所以应填写was doing)

3. 填空题型

While we____(wait) for the bus, a girl____ (run) up to us.

(解析：本题考查while 引导的主从句的时态，从句用过去进行时，主句用一般过去时，故答案为were waiting, ran)

四、学以致用

1、 我要解决生活中实际问题。（根据提问，结合实际情况写出由when和while 引导的一组同义句。）

What were you doing when I came in?

2、每课一测                                                背诵过去进行时相关语法知识。