新概念英语第一册语法:现在完成时

 来源:沪江英语    要点:新概念英语  
编辑点评: 现在完成时,构成:主语+助动词have, has+过去分词


学习英语的敲门砖(First Things First),讲练基本语音、语调(包括所有音标、连读、同化)及英语中的基本语法、词法、句法及句型结构知识。在学习时应跟着老师进行大量的语音语调练习、培养良好的发音习惯,为之后进一步学习英语打下良好基础。

现在完成时

  构成:主语+助动词have, has+过去分词

  用法:

  1) 表示过去发生的和现在有某种联系的动作,常和just, usually, already, since等时间副词连用。

  I have just had lunch. (饱了,不用再吃了。)

  He has had a cup of tea.(不渴了,不用再喝。)

  They have already had their holiday. (不能再度假了。)

  The boy has already read the book. (已经知道书的内容了,不用再看了。)

  2) 询问别人是否做过某事一般用现在完成时:

  Have you finished your homework?

  Have you been to Beijing?

  Have he seen the film?

  3) 表示开始于过去并持续到现在的动作

  I have lived in Beijing for twenty years.

  I have worked for this school for 1 year.

  4) 表示一种经历,经验:去过…地方,做过…事情,经历过…事情

  I have never had a bath.

  I have never seen a film.

  I have never been to cinema.

  I have ever been to Paris.

  Have been to表示去过,have gone to 表示去了

  I have been to London.(人已经回来)

  He has gone to London.(人还在那里)

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