1、2 现在完成时的用法现在完成时have（has）+过去分词有以下的用法：结束、结果：表示现在刚完成的动作。继续：表示过去继续到现在的动作或状态。经验：表示过去某时到现在的经验。1结束、结果I have read the book already.我已经读过这本书了。表示一个过去发生并结束的动作对现在产生的结果和影响。这一类情况可以细致分为下述两种情况。1.表示开始于过去的动作刚刚结束。常和just，now，already，yet，notyet等连用。Li Ming has just turned off the light.李明刚刚把灯关上。（说明现在灯关上了）Ive finished my
2、homework now.现在我已经做完作业了。（说明可以交作业或做别的了）2. 表示过去动作的结果，现在仍残留着。一般不用时间状语。I have lost my pen.我把笔丢了。（说明过去某时丢的，现在我还没找到这支笔）She has become a teacher.她已经当了老师。（说明她现在仍是老师）2继续I have known him for ten years.我认识他十年了。表示过去已经开始，持续到现在，而且还能继续下去的动作或状态。往往和表示一段时间的状语连用。如today，this week（month），lately，recently，these days，in th
3、e past few days，during the last two weeks. since，since yesterday，since 2 days ago，since 1991，for a longtime，for a month，so far，up to now，till（until） now等。He has lived here for 30 years.他住在这儿三十年了。（现在还住在这儿）Theyve known each other since childhood.他们从小彼此相识。（现在还继续往来）How long have you studied English？你学英语
4、多久了？（现在仍在学）注意问句时常用How long3经验He has never been ill in his life.他一生中从未生过病。表示从过去到现在之间曾经经历过的事情。常和often，never，ever，once，twice，three times，before，since等连用。I have been to the Summer Palace twice.我曾经去过颐和园两次。We have visited your school before.我以前曾去过你们学校。（过去的经历，但现在依然记得）现在完成时的用法 练习题汉译英1我听说你姐姐结婚了，是真的吗？ 是的，她已经结
5、婚五年了。她和一个医生结婚了。 2你哥哥参军了吗？ 他参军了。 他什么时候参军的？ 他是1990年参军的，他参军已经五年了。 3你父亲在哪儿？他在家吗？ 他不在家，他去美国了。他是三年前去的，他在那已经呆了三年多了。 【答案】1I hear your sister has marriedIs it true?Yes, she has been married for 5 yearsShe has been married to a doctor2Has your brother joined the army? Yes, he hasWhen did he join the army? He joined the army in 1990He has been in the army ( has been an army man ) for 5 years3Where is your father? Is he in ( at home )?No, he isnt ( in )He has gone to AmericaHe went there three years agoHe has been there for 3years