現在完成時的時間狀語
(1)現在完成時屬於現在時範圍，故不能和過去的時間狀語連用。如：yesterday,last Sunday,in1990,three yearsago等。但是，在強調動作產生的後果和影響時，可以和一些表示不確定的時間狀語連用。
a. 用副詞already和yet。already一般用於肯定句中，yet一般用於否定句和疑問句中。
如：We have already finished ourhomework.我們已完成作業了。
They haven't finished their homework yet.他們還沒有完成作業。
b.用ever 和never。多用於否定或疑問句中，表示“曾經”或“從未“等。
如：-Have you ever been to the Great Wall?你曾經去過長城嗎?
-I have never been to the Great Wall.我從未去過長城。
c.用表示到說話為止的過去時間狀語，如just, before, up to now, the past few years等。
例如：I haveseen her before, but I can not remember where.
我以前見過她，但記不起在哪裡見過。
Hehas been there three times the last few days.
近幾年他去過那裡三次了。
d.用包括“現在”在內的時間狀語，如：now, today, this morning (month ,year,term)等。
例如：-Haveyou met him today?-No,I haven't.
今天你見過他嗎?我沒有。
Howmany times have you been there this year?
今年你去過那裡多少次?
(2)現在完成時可以和帶有since或for等表示“一段時間”的狀語連用,表示動作或狀態從某一時刻開始，一直持續到現在。如：I haven't seen him for two years. 但是，像come, arrive, buy等終止性動詞不能與表示“一段時間”的狀語連用。要用，必須改為“be(在)”等延續性動詞來表述
現歸納總結一下由非延續性動詞到延續性動詞的轉換：
arrive→behere
begin(start)→be on
die→bedead
come back→be back
leave →beaway
fall ill(sick,asleep)→be ill(sick,asleep)
get up→beup
go out→be out
finish →beover
put on→wear 或be on
open →be open
join→be in或 be amember of…
close→beclosed
go to school→be a student
borrow →keep
buy→have
catch(a cold)→ have(a cold)
get to know →know
begin tostudy→study
come to work→work等
如：He has been a soldier for three years.他參軍三年了。
His father has been dead for two years.他父親去世二年了。
The film has been on for ten minutes.電影已開始十分鐘了。
We have studied English for three years. 我們(開始)學英語已三年了。
(1)現在完成時屬於現在時範圍，故不能和過去的時間狀語連用。如：yesterday,last Sunday,in1990,three yearsago等。但是，在強調動作產生的後果和影響時，可以和一些表示不確定的時間狀語連用。
a. 用副詞already和yet。already一般用於肯定句中，yet一般用於否定句和疑問句中。
如：We have already finished ourhomework.我們已完成作業了。
They haven't finished their homework yet.他們還沒有完成作業。
b.用ever 和never。多用於否定或疑問句中，表示“曾經”或“從未“等。
如：-Have you ever been to the Great Wall?你曾經去過長城嗎?
-I have never been to the Great Wall.我從未去過長城。
c.用表示到說話為止的過去時間狀語，如just, before, up to now, the past few years等。
例如：I haveseen her before, but I can not remember where.
我以前見過她，但記不起在哪裡見過。
Hehas been there three times the last few days.
近幾年他去過那裡三次了。
d.用包括“現在”在內的時間狀語，如：now, today, this morning (month ,year,term)等。
例如：-Haveyou met him today?-No,I haven't.
今天你見過他嗎?我沒有。
Howmany times have you been there this year?
今年你去過那裡多少次?
(2)現在完成時可以和帶有since或for等表示“一段時間”的狀語連用,表示動作或狀態從某一時刻開始，一直持續到現在。如：I haven't seen him for two years. 但是，像come, arrive, buy等終止性動詞不能與表示“一段時間”的狀語連用。要用，必須改為“be(在)”等延續性動詞來表述
現歸納總結一下由非延續性動詞到延續性動詞的轉換：
arrive→behere
begin(start)→be on
die→bedead
come back→be back
leave →beaway
fall ill(sick,asleep)→be ill(sick,asleep)
get up→beup
go out→be out
finish →beover
put on→wear 或be on
open →be open
join→be in或 be amember of…
close→beclosed
go to school→be a student
borrow →keep
buy→have
catch(a cold)→ have(a cold)
get to know →know
begin tostudy→study
come to work→work等
如：He has been a soldier for three years.他參軍三年了。
His father has been dead for two years.他父親去世二年了。
The film has been on for ten minutes.電影已開始十分鐘了。
We have studied English for three years. 我們(開始)學英語已三年了。
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