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八年级英语下册_unit6_sectionA课件人教版新目标

发布时间:2014-06-12 11:27:51  

Unit 6
How long have you been collecting shells?

1. How long did you sleep last night? For eight hours.

2. When did you start class today? At seven forty-five.

3. How long have you been in class today? I have been in

class for one hour.

What are you doing? I am skating. How long have you been skating? I’ve been skating since nine o’clock. I’ve been skating for five hours.

How long did you skate?

I skated for two hours.

PAIRWORK

collect stamps

study

play the piano swimming

1b Listening
How long?
Alison I’ve been skating for five hours. Sam I skated for four hours. I’ve been skating for five hours. I skated for two hours.

Victor
Celia

1c PAIRWORK Ask and answer questions about the people in the picture.

A: How long has Alison been skating? B: She’s been skating for five hours. A: How long did Sam skate? B: He skated for four hours.

2a Listening
?

?

?

?

1. How long did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating?

2b Listening
Questions 1. How long did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating?

Answers
a. No, I skated in a marathon last year. b. Yes, I do. c. For six hours. d. Since I was seven years old.

Explanation
1. 现在完成进行时:表示从过去开始一直 持续到现在的工作,这个动作可能刚结 束,也可能还要继续下去,常与for two hours, since 1998, all this morning, these few days等表示一段时间的状语连用。

现在完成进行时的构成: have / has been
+(现在分词) doing, 否定形式为:have /

has not been doing,一般疑问句构
成:Have/Has sb. been doing sth.?

特殊疑问句形式(询问持续时间长短):
How long have/has sb. been doing sth.?

例: 1). I have been cleaning the room all this morning. 我今天一上午都在打扫房间。 2). I’ve been studying English since I was 4 years old. 自从4岁起我就一直学英语。 3). He has been living in the street for about 20 years. 他一直在这条街住了近20年了。

常和表示一段时间的状语连用。 They have been working for two hours. 他 们已工作两小时了。 for和表示一段时间的词组连用
They have been running since six o’clock. 从6点起他们一直在跑。 since 和表示过去某一时刻的词或词组连用 I have been waiting for you since I came here. 自到这儿以来我一直在等你。 since后可跟句子,句子时态多用一般过去时

When did Yao Ming

start playing
basketball? How long has Yao Ming been playing basketball?

Yao Ming’s sports life was born started playing basketball plays
16 years 1980

1989

has been playing

2006

He started playing basketball in 1989. He has been playin

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