一般過去時-現(xiàn)在完成時和過去完成時(共8頁).doc
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1、精選優(yōu)質(zhì)文檔-傾情為你奉上一般過去時,現(xiàn)在完成時和過去完成時 一般過去時態(tài)表示過去某個時間發(fā)生的動作或存在的狀態(tài),常和表示過去的時間狀語連用,也表示過去經(jīng)?;蚍磸?fù)發(fā)生的動作,常和表示頻度的時間狀語連用,試看下列例句: 1. I was in the classroom yesterday morning2. My father was at work last week.3. I visited the Palace Museum three weeks ago.4. He always went to work by bus last year.5. I wrote home once a
2、week at college. 1. yesterday或以其構(gòu)成的短語:yesterday morning(afternoon, evening)等;2. 由"last+一時間名詞"構(gòu)成的短語:last night, last year (winter, month, week)等;3. 由"時間段+ago"構(gòu)成的短語:a moment ago, a short time ago, an hour ago等;4. 其它:just now或者由句子本身的時態(tài)所反映出來的?,F(xiàn)在完成時表示:(1)過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果,
3、常與already,just,yet,before,ever,never 等副詞連用;(2)發(fā)生在過去某一時刻的,持續(xù)到現(xiàn)在的動作(用行為動詞表示)或狀態(tài)(be動詞表示),常與for(+時間段),since(+時間點或過去時的句子)連用。試看下列例句:1. My father has brought many books for me , so I can do some reading now.2. I have already finished my homework, so I can give it to my teacher now.3. Kevin hasn't seen
4、the film yet, so he has nothing to say about the film.4. This is the best film I have ever seen.5. Mary has been ill for three days. 6. I have lived here since 1998. 現(xiàn)在完成時不能和表示過去的時間狀語連用,如yesterday, last year, two days ago, just now等等,但可以和already, yet, sometimes, always, before, recently,ever, never等
5、連用。I have met him before. 我從前曾見過他。Ma Hong has always been a good student. 馬紅一直是個好學(xué)生。I have often seen him in the street. 我經(jīng)常在街上看見他。They have never been to Beijing. 他們從未去過延安。I haven't seen him recently. 我近來沒看到他?,F(xiàn)在完成時既然可以表示從過去持續(xù)到現(xiàn)在,那么在延續(xù)性用法中,謂語動詞必須為延續(xù)性的,而不可以和瞬間動詞連用。1. I have brought the book for t
6、en days. ( × )2. They have already come here since three years ago. ( × ) 但是,在否定句中非延續(xù)性動詞可以表示狀態(tài)的延續(xù),試看下列例句:1. I haven't seen her for a long time.2. He hasn't left home ever since he lost his job.過去完成時表示在過去某一時間或動作之前已經(jīng)發(fā)生或完成了的動作,即“過去的過去”, 常與by, before 等詞連用,也可以表示在過去某個時間或動作之前發(fā)生并一直持續(xù)到那個時間的
7、動作或狀態(tài),常與just,already,for,since等時間副詞連用,試看下列例句:By ten o'clock this morning, we had visited the Happy Valley.過去某一時間或動作之前I had finished my piano lesson before nine yesterday evening.The film had begun before we got to the cinema.He had done his homework before he played table tennis.I had been at th
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