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人教版新目标英语八年级下册Unit_6 period 1

发布时间:2014-03-14 09:02:01  

?I started teaching English in 2000. ?I am still teaching English now. ?How long have you been teaching English? I have been teaching English for 13 years.

(一)时态-现在完成进行时 构成形式: have / has been + Ving have / has是助动词 been是be的过去分词

表示从过去开始一直持续到现在的动作, 并有可能持续下去.
for +一段时间

have / has been + doing sth +

since +过去的时间点
since + 从句 (一般过去时)

与过去时的比较:
1.I watched TV for three hours.我看了三小时 的电视.(我现在没有看电视了) 2.I have been watching TV for three hours. 我看了三小时的电视.(我现在仍然在看电 视)

例句 1 我已经学了5年的英语了. I have been learning English for 5 years. 例句 2 他已经集邮10年了.
He has been collecting stamps for 10 years. He has been collecting stamps since 10 years ago. He has been collecting stamps since 1999.

画线部分提问: How long has he been collecting stamps?

(二) 引导时间的介词for与since的区别
( for与since引导的短语用how long提问 )

for
表示时间的持续

since
表示“自从过去某 一时间点以来”

for + 时间段
强调一段时间

since + 时间点
强调动作或状态 一直延续到现在

时间状语

for与since引导的短语 five minutes

for

ten days
five years May 1, 2003

since

8:00 seven years ago he was seven years old

成龙( Jackie Chan )
was born: 1954

act: 1961~ now

How long has Jackie Chan been acting? He has been acting for 52 years. He has been acting since 1961. He has been acting since he was 7 years old.

Tracey
was born: 1981 learn English: 1994~ now

How long has Tracey been learning English? She has been learning English for 19 years. She has been learning English since 1994. She has been learning English since 19 years ago.

She has been learning English since she was 13.

A:How long has he/she been ………? B: He /she’s been ……. for …………

Linda/30 minutes Harry/45 minutes

1 hour

Alice 4 hours

Alan / 3 hours

2 years

1b.Listen. A reporter is talking to the participants in a skating marathon. Fill in the chart below.

How long? Alison Sam Victor I’ve been skating for five hours. I skated for four hours.

I’ve been skating for five hours.
I skated for two hours.

Celia

Pairwork
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 Listen to the interview with the skating marathon winner and check the questions you hear.

Questions
1. How long did you skate today? 2. How long have you been skating today?

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.

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?

用for和since填空
si

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