文档介绍：Section A
Unit 6
How long have you been
collecting shells?
When did Yao Ming start playing basketball?
How long has Yao Ming been playing basketball?
姚明
1980:be born
1989~now: basketball player
He started playing basketball in 1989.
He has been playing basketball since 1989.
He has been playing basketball for 17 years.
Miss Li
1975: be born
2001~2006: teach Chinese
How long has Miss Li been teaching Chinese?
She has been teaching Chinese for 6 years.
She has been teaching Chinese since 2001.
She has been teaching Chinese since 6 years ago.
When did Miss Li start teaching?
She started teaching in 2001.
Name:Liu Xiang
Job:athlete
1997~now: running
How long has he been running?
He has been running since 1997.
He has been running for 12 years.
He started running in 1997.
3. 时间状语: 1. for +一段时间
: for 8 years
2. since +过去的时间点
: since 1999
3. since +一般过去时的句子
: since I was 25 years old
1. 含义: 表示动作从过去某一时间开始一直延续到现在。
这一动作可能刚刚开始, 也可能在继续, 其动作是否继
续下去, 由上下文而定。这个时态多用于延续性动词。
语法: 现在完成进行时
2. 构成: have / has been + v-ing +…
for和表示一段时间的词组连用。
They have been working for two hours.
他们已工作两小时了。
since 和表示过去某一时刻的词或词组连用。
They have been running since six o’clock.
从6点起他们一直在跑。
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。
4. 现在完成进行时的结构:
肯定句: 主语+have / has been +doing(现在分词)…
1) I have been writing the letter for two hours.
2) He has been sleeping for 4 hours.
否定句: 主语+have / has+not +doing (现在分词)…
1) I haven’t been writing the letter for two hours.
2) He hasn’t been sleeping for 4 hours.
一般疑问句: Have / Has +主语+been +doing (现在分词)…?
1) --Have you been writing the letter foe two hours?
--Yes, I have. / No, I haven’t.
2) --Has he been sleeping for 4 hours?
--Yes, he has. / No, he hasn’t.
用for和since填空
They have been learning Chinese _____
they came to China.
2. I haven’t seen her _____ a long time.
3. He has been living here _____ 2001.
4. She has been doing her homework ____
two hours.
5. It’s 5 years _____ we left s