初中英语现在完成时详解(6页).doc
《初中英语现在完成时详解(6页).doc》由会员分享,可在线阅读,更多相关《初中英语现在完成时详解(6页).doc(6页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、-初中英语现在完成时详解-第 6 页现在完成时一、现在完成时构成构成:现在完成时由助动词have + 过去分词构成,助动词have 有人称和数的变化。第三人称单数用has,其余用have.现在完成时的否定式直接在助动词后面加上not、疑问式是把助动词提到主语之前。以study 为例,其否定式、疑问式和简单回答形式如下:否定式疑问式I have not (havent) studied.Have I studied?You have not (havent) studied.Have you studied?He has not (hasnt) studied.Has he studied?否定
2、疑问式简单回答(肯定/否定)Have I not (Havent I) studied?Yes, you have. No, you havent.Have you not (Havent you) studied?Yes, I have. No, I havent.Has he not (Hasnt he) studied?Yes, he has. No, he hasnt.二、现在完成时用法1、现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响。My daughter has just gone out. 我女儿刚出去。Im sure we
3、ve met before. 我肯定我们以前见过面。She has arrived. 她到了。2、表示持续到现在的动作或状态,往往和包括现在在内的表示一段时间的状语连用,如recently, already, just, lately, for, since,yet等。如:I havent heard from her these days. 这些日子我没有收到她的信。We havent seen you recently. 最近我们没有见到你。They have been away for two years. 他们离开已经两年了。She has been with us since Mon
4、day.for+时段since+过去一个时间点(译为:自从以来)since+时段+agosince+从句(过去时)It is+时段+since+从句(过去时)Mary has been illfor three days.I have lived heresince 1998.注意:since和for的区别since后接时间点,如1993,last term, yesterday, the time I got therefor后接一段时间,表示“长达多久”,如ten years, a while, two days等。3、表示短暂意义的动词如arrive, leave, borrow, bu
5、y, begin, start, die等,在完成时当中不能和表示一段时间的状语连用,因为它们表示的动作不可能持续。因此,不能说:He has come here for 2 weeks. The old man has died for 4 months. They have left only for 5 minutes. 4、has gone (to),has been (to), has been (in)的区别Have/Has gone(to) :去了(现在不在说话现场,可能在路上和已经到)Where is your father?He has gone to Shanghai.Ha
6、ve/Has been (to) :去过(已不在去过的地方)My father has been to Shanghai.Have/has been in:呆了多久(还在所呆的地方)My father has been in Shanghaifor two months. /since two months ago.5、现在完成时不能和表示过去的时间状语连用,如yesterday, last year, in 1976, two days ago, just now, when I came in,但可以和already, yet, sometimes, always, often, befo
7、re, lately, recently, once, twice, ever, never等连用。不能与when连用。现在完成时往往同表示不确定的过去时间状语连用例如:She has already come. 她已经来了。I havent read it yet. 我还没读过这个。I have met him before. 我从前曾见过他。Ma Hong has always been a good student. 马红一直是个好学生。I have often seen him in the street. 我经常在街上看见他。They have never been to Yanan
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 初中英语 现在完成时 详解
限制150内