Unit10 I've had this bike for three years.Section A grammar 课件 2021-2022学年人教版八年级英语下册 (共16张PPT)

(共16张PPT)
现在完成时：表示过去开始并一直持续到现在的动作或状态，
for + 时间段
since＋时间点/从句
How long: 对since 和for 引导的时间状语进行提问
我从13年前开始就住在这里。
I’ve lived here since 13 years ago.
= I’ve lived here for 13 years.
How long have you lived here
练一练
选择for或since填空。
1. I have been here ________ five months ago.
2. He has been an engineer _____ about two months.
3. Great changes have taken place(发生) ________ you left.
4. I have studied English _______ I was 12 years old.
5. It’s been two years ________ I became a high school student.
since
for
since
since
since
Self Check
1. I haven’t been to a museum _________________________.
2. I haven’t written a letter ____________________________.
3. I haven’t ridden a bike _____________________________.
4. I haven't seen a movie ______________________________.
5. I haven’t played computer games _____________________.
for five years
since I was 6 years old
since I went to middle school
since two months ago
for three hours
表示动作从过去开始，一直持续到现在。
动词使用延续性动词。
The emperor has died for 1000 years. 这个皇帝已经死了1000年了。
延续性动词与非延续性动词
若现在完成时的句子中含表示时间段的时间状语(如含since/for引导的时间状语)，则谓语只能使用延续性动词。
延续性动词表示能够延续的动作。短暂性动词表示不能延续的动作，这种动作发生后立即结束。
V ---- be + 形容词/副词/介词/名词
die — be dead fall sleep — be asleep
go out — be out get married — be married
come back — be back become / make friends — be friends
leave — be away finish — be over
join — be in begin / start — be on
get to/arrive/reach — be in

常见非延续性动词和延续性动词的转变
非延续性V ---- 另一个延续性V
buy --- have/own
borrow --- keep
become --- be
put on --- wear
常见非延续性动词和延续性动词的转变
非延续性动词（词组） 延续性动词（词组）
become be
borrow keep
buy have/own
get up be up
fall asleep be asleep
make friends be friends
finish be over
leave be away (from)
非延续性动词（词组） 延续性动词（词组）
open be open
close be closed
lose be lost
die be dead
join be in
begin/start be on
come back be back
turn on/off be on/off
他入队两年了。
( × ) He has joined the team for two years.
( √ ) He has been in the team for two years.
这块手表我买了两年了。
( × ) I have bought this watch for two years.
( √ ) I have had this watch for two years.
练一练
Becky (has been, has become) a doctor for ten years.
2) We are late.
The movie (has started, has been on) for ten minutes.
3) Ken, you should return the book to the library.
You (have borrowed, have kept) it for more than two weeks.
4) I (have bought, have had) this bike since I was ten,
so I want to buy a new one.
has been
has been on
have kept
have had
4a
Rewrite the sentences using for or since.
1. Jim is in Japan. He arrived there three days ago.
____________________________________________
2. They are very hungry. Their last meal was ten hours ago.
____________________________________________
3. I have a camera. I bought it in 2009.
____________________________________________
4. I know Anna. I first met her three years ago.
________________________________________________
5. Linda is ill. She became ill on Monday.
________________________________________________
They haven’t eaten/had anything for ten hours.
I have had the camera since 2009.
Jim has been in Japan for three days.
I have known Anna for three years/since three years ago.
Linda has been ill since Monday.
4b
Fill in the blanks with the correct forms of the words in brackets.
I _______________ (never be) to the water park before.
I want to _______ (go) next month before the weather gets too cold.
2. They ________________ (never own) any pets,
but they ___________________ (always want) to have a dog.
3. We ____________ (have) a piano since last November.
We ______ (buy) it from the Li family when they moved to the US last year.
4. Cathy and Amy _____________ (not be) back to their hometown for two years.
They ________(miss) their hometown a lot and hope to visit the place next year.
5. This museum _____________ (be) here for over 20 years.
It ______ (be) one of the oldest buildings in this small town.
have never been
go
have never owned
always want
have had
bought
haven’t been
miss
has been
is
1. Do you have a(n)______ How long have you had it
2. Do you own a(n)______ How long have you owned it
Fill in the questions and ask two students. Then complete the chart.
4c
Things How long
Tony favorite book for two years
basketball since he was 10 years old
Student 1
Student 2
2 Complete the conversation
A: Hey Eric, _______ you enjoyed your time in Beijing so far
B: Yes, it _______ been great! Everyone is so friendly.
A: How long _______ you been in China now
B: Oh, I ___________ here _______ about two years now.
A: Wow, that means you haven’t ______ back to the US for two years
B: No, I ________ been back twice _________ moving to China.
_________ you been to the US before, Li Juan
A: Yes, I went there once when I _______ 10 years old, but I ________ not been back _________ then.
have
has
have
have been
for
been
have
since
Have
was
have
since
1. I have borrowed the book for 3 months.
2. My bother has joined the army since he was 18.
3. Jack and Tom have lived here since 5 years.
4. The film has been on since I have come to the cinema.
5. When has Mr. Li caught a bad cold
have kept
has been in
since 5 years ago/ for 5 years
came
did
catch
7. Jim has gone to Beijing for 2 years.
8.I have gone to Chunhua Middle School twice
has been in
have been to
1. 她成为一名护士已经三年了。 (become)
2. 我已经离开上海5天了。 (leave)
3. 这本书他已经买了两周了。 (buy)
4. 我入团已经一年了。 (jion)
5. 电影已经开演半个小时了。 (begin)
6.他来这里已经三年了。 (come)
She has been a nurse for three years.
I have been away Shanghai since five days ago.
He has had the book for 2 weeks.
I have been in the League for one year.
The film has already been on for 10 minutes.
He has been here for three years since he came .