2022小學(xué)英語(yǔ)語(yǔ)法:現(xiàn)在完成時(shí)
來(lái)源:奧數(shù)網(wǎng)整理 2022-03-20 15:31:39
2022小學(xué)英語(yǔ)語(yǔ)法:現(xiàn)在完成時(shí)
現(xiàn)在完成時(shí)
構(gòu)成:主語(yǔ)+助動(dòng)詞have, has+過(guò)去分詞
用法:
1) 表示過(guò)去發(fā)生的和現(xiàn)在有某種聯(lián)系的動(dòng)作,常和just, usually, already, since等時(shí)間副詞連用。
I have just had lunch. (飽了,不用再吃了。)
He has had a cup of tea.(不渴了,不用再喝。)
They have already had their holiday. (不能再度假了。)
The boy has already read the book. (已經(jīng)知道書(shū)的內(nèi)容了,不用再看了。)
2) 詢問(wèn)別人是否做過(guò)某事一般用現(xiàn)在完成時(shí):
Have you finished your homework?
Have you been to Beijing?
Has he seen the film?
3) 表示開(kāi)始于過(guò)去并持續(xù)到現(xiàn)在的動(dòng)作
I have lived in Beijing for twenty years.
I have worked for this school for 1 year.
4) 表示一種經(jīng)歷,經(jīng)驗(yàn):去過(guò)…地方,做過(guò)…事情,經(jīng)歷過(guò)…事情
I have never had a bath.
I have never seen a film.
I have never been to cinema.
I have ever been to Paris.
Have been to表示去過(guò),have gone to 表示去了
I have been to London.(人已經(jīng)回來(lái))
He has gone to London.(人還在那里)
5) 表示一種結(jié)果, 一般不和時(shí)間副詞聯(lián)用
I have lost my pen.
I have hurt myself.
He has become a teacher.
She has broken my heart.
句型變化:
★變疑問(wèn)句將助動(dòng)詞移到句首,變否定句在助動(dòng)詞后面加not.
Have you lost your pen? I have not lost my pen.
★肯定回答及否定回答
Yes, I have. / No, I have not.
★特殊疑問(wèn)句
What have you done?
What has he done?
一般過(guò)去時(shí)與現(xiàn)在完成時(shí)的區(qū)別:
凡是有明確的表示過(guò)去的時(shí)間狀語(yǔ)的句子為過(guò)去時(shí)。
注意:有些動(dòng)詞表示的動(dòng)作有一個(gè)終點(diǎn),不能再延續(xù),因此不能和表示一段時(shí)間狀語(yǔ)連用。
錯(cuò):I’ve left Beijing for 3 days.
對(duì):I left Beijing 3 days ago. I have been away from being for 3 days.
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