grammar動詞時態(tài)-wenkub.com
2025-05-05 08:46 本頁面
【正文】 ? At that time, people did not know that the earth moves. ? He told me last week that he is eighteen. ? 2) 賓語從句中的助動詞 ought, need, must, dare 時態(tài)是不變的。 44 現(xiàn)在進(jìn)行時代替將來時 ? 1) 表示即將發(fā)生的或預(yù)定中計劃好的活動。 succeed D. would not give。 42 一般現(xiàn)在時代替將來時 ? 時間狀語從句，條件句中，從句用一般現(xiàn)在時代替將來時 ? When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, the moment, the minute, the day, the year, immediately ? He is going to visit her aunt the day he arrives in Beijing. 他一到北京，就去看他姨媽。 41 ? 2) As she ___ the newspaper, Granny ___ asleep. ? A. read； was falling B. was reading； fell ? C. was reading； was falling D. read； fell ? 答案 as = when, while，意為 當(dāng) …… 之時 。 ? Our teacher told us that Columbus discovered America in 1492. 36 將來完成時 ? 動作完成：表示將來某一時或另一個將來的動作之前，已經(jīng)完成的動作或一獲得的經(jīng)驗。因此前一句應(yīng)用過去進(jìn)行時。 She said (that) she had never been to Paris 32 ? b. 狀語從句 ? 在過去不同時間發(fā)生的兩個動作中，發(fā)生在先，用過去完成時；發(fā)生在后，用一般過去時。再次， several times告知為反復(fù)發(fā)生的動作，因此用現(xiàn)在完成時。 ? He slept until ten o39。ve known him since then. 我從那時起就認(rèn)識他了。 ? 1) (對 ) Tom has studied Russian for three years. ? = Tom began to study Russian three years ago, and is still studying it now. ? 2) (錯 ) Harry has got married for six years. ? = Harry began to get married six years ago, and is still getting married now. ? 顯然，第二句不對，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years. 26 since的四種用法 ? 1) since +過去一個時間點 (如具體的年、月、日期、鐘點、 1980, last month, half past six)。 ? I have lived here for more than twenty years. ? I have lived here since I was born.. ? My aunt has worked in a clinic since 1949. ? Some new oilfields have been opened up since 1976. ? I have known Xiao Li since she was a little girl. ? My brother has been in the Youth League for two years. ? I have not heard from my uncle for a long time. 24 ? 注意：并非有 for 作為時間狀語的句子都用現(xiàn)在完成時。 ? 注意：非延續(xù)性動詞的否定形式可以與表示延續(xù)時間的狀語連用。 21 ? 典型例題 ? (1) Do you know our town at all? ? No, this is the first time I ___ here. ? A. was B. have been C. came D. am ing ? 答案 B. This is the first time 后面所加從句應(yīng)為現(xiàn)在完成時，故選 B。 ? It is the first time that I have visited the city. ? It was the third time that the boy had been late. ? 2） This is the… that… 結(jié)構(gòu)， that 從句要用現(xiàn)在完成時 . ? This is the best film that I39。 ? He has been in the League for three years. ? (在團(tuán)內(nèi)的狀態(tài)可延續(xù) ) 19 ? He has been a League member for three years. ? (是團(tuán)員的狀態(tài)可持續(xù) ) ? He joined the League three years ago
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