小學(xué)五年級英語語法復(fù)習(xí):現(xiàn)在完成時(shí)

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    構(gòu)成:主語+助動詞have, has+過去分詞
     用法:
     2) 表示過去發(fā)生的和現(xiàn)在有某種聯(lián)系的動作,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)知道書的內(nèi)容了,不用再看了)
     3) 詢問別人是否做過某事一般用現(xiàn)在完成時(shí):
     Have you finished your homework?
     Have you been to Beijing?
     Have he seen the film?
     4) 表示開始于過去并持續(xù)到現(xiàn)在的動作
     I have lived in Beijing for twenty years.
     I have worked for this school for 1 year.
     5) 表示一種經(jīng)歷,經(jīng)驗(yàn):去過…地方,做過…事情,經(jīng)歷過…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,have gone to 表示去了
     I have been to London.(人已經(jīng)回來)
     He has gone to London.(人還在那里)
     6) 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:
     ★變疑問句將助動詞移到句首,變否定句在助動詞后面加not.
     e.g. 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.
     ★特殊疑問句:
     What have you done?
     What has he done?
     一般過去時(shí)與現(xiàn)在完成時(shí)的區(qū)別:
     凡是有明確的表示過去的時(shí)間狀語的句子為過去時(shí)
     注意:有些動詞表示的動作有一個(gè)終點(diǎn),不能再延續(xù),因此不能和表示一段時(shí)間狀語連用
     錯(cuò):I’ve left Beijing for 3 days.
     對:I left Beijing 3 days ago. I have been away from being for 3 days.