1、 现在完成时现在完成时时态时态一般现在时一般过去时一般将来时现在进行时过去进行时现在完成时过去完成时过去将来时考点一：考点一：初中八大时态初中八大时态一条时间轴，带你领略初中英语各个时态的不同风采。一条时间轴，带你领略初中英语各个时态的不同风采。012-1-2future（将来）（将来）past（过去）（过去）Time一般一般过去过去式式过去过去进行时进行时一般一般将来将来时时now（现在）（现在）一般一般现在现在时时现在现在进行时进行时现在完成现在完成时时1.表示过去做的事情持续到了现在表示过去做的事情持续到了现在,而且还有可能持续下去而且还有可能持续下去 （现在还在做）（现在还在做）2.表
2、示过去做的事，对现在有影响表示过去做的事，对现在有影响 （现在没做了）（现在没做了）I have already eaten breakfast.I have already eaten breakfast.（我已吃过早餐，我不饿了）（我已吃过早餐，我不饿了）微笑中透露着一微笑中透露着一点迷茫！呜点迷茫！呜My mother often comes into my bedroom with a bottle of milk.在你妈进来之前你在玩王者农药。在你妈进来之前你在玩王者农药。You have played the game before.她摸了摸你的手机，发现很烫，她摸了摸你的手机，发
3、现很烫，她立马就知道你玩过王者农药了。她立马就知道你玩过王者农药了。You mother realizes that you have played the game.You have played the game for five hours.主语主语+have/has+过去分词过去分词助动词助动词,无意义无意义 现在完成时的结构现在完成时的结构Winter has already come，will it still be far in spring?主语主语+have/has+过去分词（过去分词（pp）否定形式否定形式 havent(have not）+过去分词过去分词 hasnt(h
4、as not)+过去分词过去分词疑问句疑问句 把助动词把助动词 have/has 放在句首放在句首 现在完成时的结构现在完成时的结构注：主语若是第三人称单数助动词用注：主语若是第三人称单数助动词用 has1.常和副词常和副词already,yet,never,ever,before,just等连用。等连用。什么情况什么情况要用现在要用现在完成时？完成时？He has already left here.My teachers havent had breakfast yet.Have you written to your parents yet?注：注：already 往往用于肯定句，往往用
5、于肯定句，yet 用于否定用于否定句和疑问句。句和疑问句。什么情况什么情况要用现在要用现在完成时？完成时？vWe have never been to the Great Wall.vHave you ever been to Canada?我们从来没有去过长城。我们从来没有去过长城。你们曾经去过加拿大吗？你们曾经去过加拿大吗？2.by now(so far),once/twice,by this time recently,in/during the past/last 5 years什么情况什么情况要用现在要用现在完成时？完成时？什么情况什么情况要用现在要用现在完成时？完成时？3.for+
6、一一段时间段时间 主语主语+have/has done+since+时间点时间点/时间段时间段+ago /句子（一般过去时）句子（一般过去时）since:(自自以来以来)1)since+时间点时间点He has stayed here since 5 oclock.2)since+时间段时间段+agoHe has stayed here since 5 hours ago.3)since+从句从句She has taught English since he came here.for:(长达）长达）for+时间段时间段He has kept the book for 2 weeks.干货还不
7、赶紧记干货还不赶紧记since&forPractice用用for 或或since填空填空1.Mr.Brown has had his TV _ 15 years.2.Ive taken driving lessons _last month.3.My sister has had her cell phone _a month.4.My friends havent visited me _few days ago.5.We havent used our car _ a long time.6.She hasnt had a good cup of coffee _years.7.Tom h
8、as worn glasses _he was 7 years old.Practice 1.I_ already _(see)the film.I _(see)it last week.2._ he _(finish)his work today?Not yet.3.My father _ just _(come)back from work.He is tired now.4.Wheres Li Ming?He _(go)to the teachers office.5.I _(work)here since I _(move)here in 1999.6.So far I _(make)
9、quite a few friends here.7.How long _ the Wangs _(stay)here?For two weeks.8.I _ just _(finish)my homework.Practice 9.He _(go)to school on foot every day.10._ you _(find)your science book yet?11.If it _(be)fine tomorrow,Ill go with you.12.The students _(read)English when the teacher came in.13.Look!T
10、he monkey _(climb)the tree.14.My mother _(come)to see me next Sunday.15.Ive lost my pen._ you _(see)it anywhere?升堂：三胞胎辨别案升堂：三胞胎辨别案have been to+地名（曾经去过，人已回）have gone to+地名（去了某地，人未回）have been in+地名+for+一段时间（已经在某地多长时间）再难一点再难一点试比较，判断下列句子的正误。翻译：他入团两年了。He has joined the League for two years.He has been a
11、League member for two years.解析：解析：当现在完成时与表示当现在完成时与表示一段一段时间的时间状语连用时，谓语动词必须使用时间的时间状语连用时，谓语动词必须使用延续性动词。如果谓语动词是非延续性动词则延续性动词。如果谓语动词是非延续性动词则需要需要转化为对应的延续性动词。转化为对应的延续性动词。非延续性动词与延续性动词之间的转换非延续性动词与延续性动词之间的转换1.转化为相应的延续性动词 borrow keepbuy haveput on wearget to know knowget to sleep sleepcatch a cold have a cold 2
12、.转化为 be+形容词/副词/介词/名词begin/start be ongo out be outdie be deadopen be openget to/arrive in/reach be in+地点come/go be+相应的介词短语finish be overfall ill be illget up be upfall asleep be asleep join be in+活动/组织go to school be in schoolbecome bemake friends be friends close be closedgo to bed be in bed leave
13、be away(from)小试牛刀小试牛刀一下吧一下吧如：下面是句子的同义句转换（将一般过去时改成现在完成时）The old man died four years ago.（一般过去时）The old man has been dead for four years.（现在完成时，将die变为 be dead）The old man has been dead since four years ago.（现在完成时，since跟过去的时间点）小试牛刀小试牛刀一下吧一下吧My father left Guizhou last week.My father Guizhou a week.My father Guizhou last week.
