现在完成时1幻灯片.pptVIP

练习 判断：他到达车站半个小时了 He has arrived at the station for half an hour( ) 比较改错： He has come to Beijing since last year. He has lived in Beijing since last year. 特别提醒：1)瞬间动词（终止性动词）可以用于完成时态，但在肯定句中不可以接表示一段时间的状语，如要接表示一段时间的状语， 需要做一些相应的转换。但瞬间动词的否定式可以接表示一段时间的状语 open,stop,like,love,die,win,close,shot,begin,start enter,finish ，come, go等。 特别提醒： 2）since和跟延续性动词的过去时态，该动词的词义与其本来意思相反，即从动作的结束时以来 翻译： How long is it since you were in Shanghai？ 你离开上海有多久了？ --What a surprise! Your father stopped smoking! --Didn’t you know? It is almost one year since he _________. A didn’t smoke B smoked C had smoked D not smoking 用have /has been to和have / has gone to填空 1.— Hi，Lucy， you ever Beijing？ — No，I . 2.— What about your sister，Lily？ — Oh，she Chengdu， she will come back next week. — Ok，thanks. — You’re welcome. 定义三)在条件，时间，让步状语从句中，表示将来某时间以前已完成的动作。 —When shall we restart our business? —Not until we have finished our plan. ——什么时候我们重新开始我们的事业？ ——直到我们已完成我们的计划。 4)表示反复发生的动作 Some villagers say that they have seen UFOs many times. .用法五)现在完成时的常用固定句型： 1) It is (has been) +a period of time +since-clause. 2) This (That/It) is the first (second…) time + that-clause (present perfect tense). 3) This (That/It) is the only … + that-clause (present perfect tense). 4) This (That/It) is the best/ finest /most interesting … + that-clause. 练习 This is the first time we _______ a film in the cinema together as a family. A see B had seen C saw D have seen 翻译：这是我看过的最好的一部电影。 This is the best film that I have ever seen. 我来这儿已经有六年了。 It is / has been six years since I came here. 练习 自从我来到这正好两天 现在完成时的标志词 1 迄今为止： so far, up to now up till now , until now 2 最近的过去： in the last/ past years ,recently. lately, these few days 3表示一段时间的短语：all day, all these year,all one’s life 一般过去时的时间时间状语： Yesterday, ago,last week, in 1998, in october,just now等皆为具体的