動詞的時態(tài)1一般現(xiàn)在時的用法一般現(xiàn)在時構成amisare(編輯修改稿)
2024-11-17 10:57 本頁面
【文章內(nèi)容簡介】 完成時通常與模糊的時間狀語連用，或無時間狀語。 一般過去時的時間狀語 : yesterday, last week， …ago, in1980, in October, just now, 具體的時間狀語 共同的時間狀語 : this morning, tonight, this April, now, once， before, already, recently， lately 現(xiàn)在完成時的時間狀語 for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always, 不確定的時間狀語 3）現(xiàn)在完成時可表示持續(xù)到現(xiàn)在的動作或狀態(tài)，動詞一般是延續(xù)性的，如 live, teach, learn, work, study, know. 過去時常用的非持續(xù)性動詞有 e, go, leave, start, die, finish, bee, get married等。 b 舉例： I saw this film yesterday. （強調(diào)看的動作發(fā)生過了。） I have seen this film. （強調(diào)對現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了。） Why did you get up so early? （強調(diào)起床的動作已發(fā)生過了。） He has been in the League for three years. (在團內(nèi)的狀態(tài)可延續(xù) ) He joined the League three years ago. ( 三年前入團， joined為短暫行為。 ) 句子中如有過去時的時間副詞（如 yesterday, last, week, in 1960）時，不能使用現(xiàn)在完成時，要用過去時。 Tom has written a letter to his parents last night. Tom wrote a letter to his parents last night. 11 用于現(xiàn)在完成時的句型 1） It is the first / second time…. that… 結構中的從句部分，用現(xiàn)在完成時。 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… 結構， that 從句要用現(xiàn)在完成時 . This is the best film that I39。ve (ever) seen. 這是我看過的最好的電影。 This is the first time (that) I39。ve heard him sing. 這是我第一次聽他唱歌 。 12 比較 since和 for Since 用來說明動作起始時間， for用來說明動作延續(xù)時間長度。 I have lived here for more than twenty years. I have lived here since I was born.. 注意：并非有 for 作為時間狀語的句子都用現(xiàn)在完成時。 I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。 ) I have worked here for many years. (現(xiàn)在我仍在這里工作。 ) 13 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 been here since 1989. 2) since +一段時間 + ago I have been here since five months ago. 3) since +從句 Great changes have taken place since you left. Considerable time has elapsed since we have been here. 4) It is +一段時間 + since從句 It is two years since I became a postgraduate student.
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