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7B U3同步复习
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Presentation
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(3) 7B U3知识点整理
1) 现在完成时(have done/has done)
A. 现在完成时用来表示对目前状况仍有影响的、刚刚完成的动作(常与yet, already, just连用), 或者过去某一时刻发生的、持续到现在的情况(常与for, since连用)
例如:
I have just finished my homework.
Mary has been ill for three years.
☆常与现在完成时连用的时间状语有:since, for等引导的短语;副词already, yet, just, ever, recently 等;状语词组so far, many times等。例如:
So far, she hasn’t enjoyed the summer vacation.
There have been a lot of changes since 1978.
在since后,我们使用“时间点”例如:
since 1997 since two years ago
在for后,我们使用“时间段”。例如:
for quite a few years for a long time
对存在since与for的现在完成时句子的时间状语提问的时候,我们使用“how long”,而且其中 的动词应该是持续性动词。
She has been a teacher since 2004.
He has had the book for several weeks.
非延续性动词
延续性动词
非延续性动词
延续性动词
buy
have
died
be dead
borrow
keep
catch a cold
have a cold
open
be open
put on
wear
close
be closed
get up
be up
begin
be on
wake up
be awake
start
be on
fall asleep
be asleep
come
be here
lose
not have
go
be away
join
be in
finish
be over
leave
be away from
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Practice
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I. Choose the best answer.
( ) 1. He’s saved one million dollars ______ ten years ago.
A) / B) since C) for D) already
( ) 2. It ______ seven years since he began to teach English here.
A) is B) have been C) has D) is for
( ) 3. My father has been a policeman ______ 2000.
A) for B) at C) in D) since
( ) 4. Where’s your mother? She ______ to Japan, she ______ there twice before.
A) has gone, has gone B) has been, has gone
C) has gone, has been D) has been, has been
( ) 5. The Harry Potter books ______ pretty popular since they were published.
A) become B) will become C) have become D) are becoming
( ) 6. Rose came to Beijing in 2002. She ______ here for eight years.
A) was living B) live C) will live D) has lived
( ) 7. How clean the bedroom is! Yes, I am sure that someone ______ it.
A) cleans B) cleaned C) has cleaned D) had cleaned
( ) 8. My brother left school in 2009, and since then he ______ in Shanghai.
A) lives B) lived C) will live D) has lived
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