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五年级英语语法学习:现在完成时

来源:101教育网整理 2017-11-07 字体大小: 分享到:

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构成:主语+助动词have, has+过去分词

    用法:

    2) 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)

    3) 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?

    4) 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.

    5) 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)

    6) 表示一种结果, 一般不和时间副词联用

    I have lost my pen.

    I have hurt myself.

    He has become a teacher.

    She has broken my heart.

    句型变化:

    ★变疑问句将助动词移到句首,变否定句在助动词后面加not.

    e.g. Have you lost your pen? I have not lost my pen.

    ★肯定回答及否定回答

    Yes, I have. No, I have not.

    ★特殊疑问句:

    What have you done?

    What has he done?

    一般过去时与现在完成时的区别:

    凡是有明确的表示过去的时间状语的句子为过去时

    注意:有些动词表示的动作有一个终点,不能再延续,因此不能和表示一段时间状语连用

    错:I’ve left Beijing for 3 days.

    对:I left Beijing 3 days ago. I have been away from being for 3 days.

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