來源:網絡資源 2022-03-12 20:56:48
功能及意義
1. 表示一個動作發(fā)生在過去,對現(xiàn)在仍有影響,但沒有具體的過去時間修飾。
常由下列副詞修飾:
ever曾經
never從不
already已經
yet還(未)(yet只用在否定句和疑問句中)
just剛剛
recently最近
lately近來
so far 迄今為止= until now, up to now,
before 以前
例:Have you ever been to the Great Wall?
你曾經去過長城嗎?
I have never heard of such a man.
我從沒有聽說過那個人。
We have just had lunch.
我們剛剛吃過午飯。
I have already returned your money.
我已經把錢還給你了。
I haven't found my book yet.(否)
我還沒有找到筆記本。
Have you done your homework yet?
(疑)你做作業(yè)了嗎?
Have you heard from him recently ?
你最近收到他的來信了嗎?
So far, no one has made any mistakes yet.
迄今為止,還沒有人犯錯誤。
I have never traveled by plane before.
我以前從來沒有乘飛機旅行過。
2. 表示一個動作發(fā)生在過去,一直持續(xù)到現(xiàn)在剛剛結束或者仍在繼續(xù)。常常與下列時間狀語連用:
→for +一段時間
I have learned English for 8 years.
→since +過去的一個時間點
I have learned English since 2001.
→since +一段時間+ ago
I have learned English since 8 years ago.
→since + 時態(tài)為一般過去時的時間狀語從句
I have learned English since I was 5 years old.
→ in the past/last +時間段
Great changes have taken place in my hometown in the past ten years.
近十年來我的家鄉(xiāng)發(fā)生了巨大的變化。
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