unit 3 .what were you doing when the ufo arrived?
一、学习目标。
1. 谈论过去发生的事情。
二、语言结构。
be+ving重点句型：be+ving
boy was walking down the street when a ufo arrived.
the boy was walking down the street, the ufo landed.
三、教学重难点：
过去进行时的用法。
四：教学方法：
1．对比现在进行时来学习过去进行时。
2． 在理解句意的基础上理解词汇的用法，记忆重点词汇、句型和语法内容。
第一课时： section a, 1a~2c
课前漫步自学质疑。
按要求写出下列单词或短语。
卧室___厨房浴室着陆当……时候离开起飞barberbarber shopalienget (过去式take (过去式land (过去式。
站在图书馆前睡过头做晚饭从……出来吃午饭理发打扫房间在通**。
4:00 pm last sundaycutting hair
walking down the streetgetting out of the library___playing tennis at the playground
when the ufo landed
****** a milk shakesleeping late
仔细观察下的对话，划出对话中所出现的时间，并补全句子。
1．a: what are you doing now?
b: i am doing my homework now. they are h**ing an english lesson.
2． a: what were you doing at 9 o’clock last night?
b我正在打扫我的房间).
a: what were you doing when your mother came back yesterday? b:i我正在讲**).
总结：对话1用了___进行时态，对话2用了进行时态。
课中行步合作**。
1a---1b . 1、看图画，对号入座，大声朗读六个句子。
2、 写出下列介词短语。
在浴室在厨房在图书馆的前面在我的卧室在理发店里。
在理法师椅子上。
3. 听听力，完成1b,圈出所听到的短语。
4. 听读对话，回答下列问题。
1). what was the girl doing when the ufo arrived ?
2). was the woman eating lunch when the ufo arrived ?
3). what were the two men doing when the ufo arrived ? one wasthe other one
小结：1、写出本课的主要语法结构：过去进行时构成。
具体用法：过去进行时表示在某一时间内或的动作。2、本课的when 和 while 的用法：
1）when 引导的从句常用动词， 时态多为和。
2）while 引导的从句常用动词，时态多为。
课后阔步巩固提升。
将下面的句子翻译成中文，并仔细观察进行比较。
1. the boy was walking down the street when the ufo landed.
2. the girl was shopping when the alien got out.
3. while the boy was walking down the street, the ufo landed.
4. while the girl was shopping, the alien got out.
根据句意，选词填空。
1. she was watching tvwhen/ while) her mother came in.
2when/ while) the boy was walking down the street, the ufo landed.
happening/ happened) while theywere swimming/ swam) in the river.
4. itwas raining / rained) hard at 9:00 pm last night.
5. helenwas reading/ read) under the tree when the ufowas landing / landed).
单项选择。 ） was talking __the phone at ten o’clock last night.
a. at b. onc. with
) student __i is very tall, so i can’t see the blackboard well.
a. in front b. in front of c. in the front of
) met mr. li___i was le**ing the library.
a. while b. when c. until
) plane will __in an hour .you h**e to take a taxi to the airport.
a. landed b. take off c. land off
) 5. when i came into my office, miss zhao __on the phone.
a. talk b. talked c. was talking
) 6. the woman couldn’t see her sonshe’s very worried.
a. anywhere b. somewhere c. nowhere d. where
）7. they are talking about something __the telephone.
a. in b. on c. atd. for
）8. we were verythat jim didn’t pass the exam.
a. surprise b. surprising c. surprised d. surprises
）9. just now she saw the maninto the room.
a. go b. went c. goes d. to go
）10. there’s a big tree __the building.
a. in front of b. in the front of c. in front d. at the front of
教、学习后记：
period 2 section a 2a-2c
学习目标：while和when的不同用法。
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