现在完成时.ppt

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三)have/has gone to,have/has been to和have/has been in的区别 have/has been in:表示某人“已在某地停留一段时间,现仍在那里”,其后常带表示一段时间的状语。 Tom 在哪儿? 他去书店买书了。 Where is Tom? He has gone to the bookshop to buy some books. Jack 去过上海两次了 Jack has been to Shanghai twice. 我在北京待了5年了。 I have been in Beijing for 5 years. 四)It is/ has been+段时间+since从句 等于一段时间+has passed+ since从句 eg. 他死了两年了: He died two years ago. He has been dead for two years /since two years ago It is/ has been two years since he died. Two years has passed since he died. * 现在完成时 The Present Perfect Tense 一)构成: have/has+动词过去分词 1.already在现在完成时中的用法 肯定句: 句中(助后实前)/句末 “己经” 一般疑问句: 句末(表示惊讶的语气) “难道” Eg. I’ve already had breakfast. (更常见) = I’ve had breakfast already.(表示强调) Have you had breakfast already? 二)?? 含义: (一)表示过去发生的动作或事情对现在的影响和产生的结果.它强调的是过去的动作同现在的联系.常用的时间状语有alread

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