| 比較過(guò)去時(shí)與現(xiàn)在完成時(shí) | ||
1）過(guò)去時(shí)表示過(guò)去某時(shí)發(fā)生的動(dòng)作或單純敘述過(guò)去的事情，強(qiáng)調(diào)動(dòng)作；現(xiàn)在完成時(shí)為過(guò)去發(fā)生的，強(qiáng)調(diào)過(guò)去的事情對(duì)現(xiàn)在的影響，強(qiáng)調(diào)的是影響。 2）過(guò)去時(shí)常與具體的時(shí)間狀語(yǔ)連用，而現(xiàn)在完成時(shí)通常與模糊的時(shí)間狀語(yǔ)連用，或無(wú)時(shí)間狀語(yǔ)。 一般過(guò)去時(shí)的時(shí)間狀語(yǔ): yesterday, last week，…ago, in1980, in October, just now, 具體的時(shí)間狀語(yǔ) 共同的時(shí)間狀語(yǔ): this morning, tonight,this April, now, once，before, already, recently，lately 現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ) for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always, 不確定的時(shí)間狀語(yǔ) 3）現(xiàn)在完成時(shí)可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，動(dòng)詞一般是延續(xù)性的，如live, teach, learn, work, study, know. 過(guò)去時(shí)常用的非持續(xù)性動(dòng)詞有come, go, leave, start, die, finish, become, get married等。 舉例： I saw this film yesterday. ?。◤?qiáng)調(diào)看的動(dòng)作發(fā)生過(guò)了。） I have seen this film. ?。◤?qiáng)調(diào)對(duì)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? ?。◤?qiáng)調(diào)起床的動(dòng)作已發(fā)生過(guò)了。） Who hasn't handed in his paper? ?。◤?qiáng)調(diào)有卷子，可能為不公平競(jìng)爭(zhēng)。） She has returned from Paris. 她已從巴黎回來(lái)了。 She returned yesterday. 她是昨天回來(lái)了。 He has been in the League for three years. (在團(tuán)內(nèi)的狀態(tài)可延續(xù)) 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. ( 三年前入團(tuán)，joined為短暫行為。) I have finished my homework now. ---Will somebody go and get Dr. White? ---He's already been sent for. 句子中如有過(guò)去時(shí)的時(shí)間副詞（如 yesterday, last, week, in 1960）時(shí)，不能使用現(xiàn)在完成時(shí)，要用過(guò)去時(shí)。 （錯(cuò)）Tom has written a letter to his parents last night. （對(duì)）Tom wrote a letter to his parents last night. | ||
