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  • 北京KET語法點(diǎn)09期:現(xiàn)在完成體Present perfect

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    完成體是動(dòng)詞的一種形式,

    它表示該動(dòng)詞所表示的動(dòng)作或狀態(tài)已經(jīng)完成。

    現(xiàn)在完成體由have/has+-ed分詞構(gòu)成


    ⑴現(xiàn)在完成體的肯定形式和否定形式



    ⑵現(xiàn)在完成體的疑問形式和回答形式



    ⑶ 動(dòng)詞的分詞形式

    ①The past participle form of regular verbs is the same as the past simple: 

    walk-walked,smile-smiled


    ②You will need to learn the past participle form of irregular verbs.Here are some common examples.


    總結(jié):大多數(shù)動(dòng)詞的過去時(shí)和-ed分詞都是在原形之后加詞尾 -ed 構(gòu)成(如 study/studied/studied,stop/stopped/stopped),這類動(dòng)詞叫做規(guī)則動(dòng)詞。有一些動(dòng)詞不以加詞尾-ed 的方式構(gòu)成過去時(shí)和 -ed分詞(如 cut/cut/cut, build/built/built, begin/began/begun),這類動(dòng)詞叫做不規(guī)則動(dòng)詞。


    第一類不規(guī)則動(dòng)詞是它們的三個(gè)主要形式(即原形、過去時(shí)、-ed分詞)同形:

    hit/hit/hit

    set/set/set

    put/put/put


    第二類不規(guī)則動(dòng)的特點(diǎn)是它們的過去時(shí)與 -ed分詞同形:

    deal/dealt/dealt

    flee/fled/fled


    第三類不規(guī)則動(dòng)詞的特點(diǎn)是它們的三個(gè)主要形式都不相同:

    ring/rang/rung

    steal/stole/stolen

    arise/arose/arisen


    ⑷ 現(xiàn)在完成體的用法




    ①We can use the present perfect to talk about our experiences:

    例句:I’ve seen all the Harry Porter films,but I haven't read the books.




    ②We do not using say when something happened with the present perfect:

    例句:I‘ve been to India.(not I've been to India last year.)


    ③Use the past simple to say when something happened:

    例句:I went to India last year.




    ④ We often use ever in present perfect questions(ever=in your life):

    例句:Have you ever been to India?

             Have you ever met someone famous?


    ⑤We can use never to talk about things we have not done in our life:

    例句:She's never been to India.

             He's never met anyone famous.


    http://616180.com/uploads/files_user49/question/5ec64705177d8154134.png


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