新东方网>小学>三年级>三年级英语>学习辅导>英语>正文

2019三年级英语语法:Be 的四功能

2019-12-01 16:46

来源:新东方网整理

作者:

  be是一个多功能动词,在初级英语里可见四种用法:

  功能一,系动词be

  be为连系动词,中心词义是"是",句型为"主+系+表"结构。be的形式常用am, is, are(现在式);was, were(过去式);will/can/may/must be(助动词/情态动词+原形);have/has/had been(助动词+过去分词)等。如:

  To help animals is helping people.(一般现在时)

  The twins were very busy yesterday.(一般过去时)

  It will be sunny tomorrow.(一般将来时)

  She has been ill for over a week.(现在完成时)

  功能二,助动词be

  助动词be,无词义,辅助主要动词一起在句中作谓语动词。用法如下:

  1. be+doing:构成进行时态,有现在和过去两种进行时态。如:

  The girls is reading and copying the new words now.

  Young Tom was always asking questions and trying out new ideas.

  2. be+done:构成被动语态(主语是动作的承受者,done必须是及物动词)。如:

  Tea is grown in my hometown.(一般现在时的被动语态)

  This building was built three years ago.(一般过去时的被动语态)

  Our classroom has been cleaned and tidied already.(现在完成时的被动语态)

  How could this kind of cakes be made in your home?(含情态动词的被动语态)

  That is a day never to be forgotten.(动词不定式的被动语态)

  3. be+going to do,表示"打算或将要做某事",be有现在和过去两种形式。如:

  We are going to plant trees in the park.

  I didn't know if she was going to come here.

  4. be+to do,表示"按计划安排将要做某事"。如:

  The new shop is not to be opened till next Monday.

  One night an angel came to Mary and told her that she was to have this special boy.

  功能三,there be

  there be句式为:there be+主语部分+状语部分,表示"某处存在某物",be常用现在时,过去时和将来时等。如:

  Oh, cool! And there are many things to see. There is even a deer park in Sanya.

  There are about 80 pyramids in Egypt.

  Will there be a football match in your school next week?

  功能四,实义be

  可以将be视为实义动词,因为它具有实际的词义,如"成为;做;发生;举行;逗留;到达"等。如:

  His daughter wants to be a doctor for animals in her twenties.

  Kate's birthday party will be at half past six this evening.

  Jim has been in China for more than two years, but he has not yet been to Yichang.

新东方网服务号

扫码关注新东方网服务号(微信号:xdfexue

获取最新1-6年级各科下册预习干货、手抄报模板、寒假生活等!

资料下载

  • 1年级语文作文看图写话专项训练

    3972次下载 点击下载
  • 2020小学一年级英语单词测试题试卷

    1821次下载 点击下载
  • 人教版2019二年级上学期英语期末考试试题

    4968次下载 点击下载
  • 2019三年级语文上册期末考试题及答案

    1858次下载 点击下载
  • 2019人教版四年级数学上册期末考试试题

    1391次下载 点击下载
  • 2019六年级上册数学期末考试卷含答案(可下载)

    1391次下载 点击下载
名称名称
300次下载

微信扫码关注"新东方网"服务号

回复""立刻获取!

小学头条

  • 小学资讯
  • 综合辅导
  • 家庭教育
  • 兴趣爱好

          新东方小学辅导专区

          班级名称 上课地点 上课时间 费用 详细

          焦点推荐

          精品直播

          版权及免责声明

          凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所有,任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的媒体、网站,在下载使用时必须注明"稿件来源:新东方",违者本网将依法追究法律责任。

          本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他媒体、网站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅自篡改为"稿件来源:新东方",本网将依法追究法律责任。

          如本网转载稿涉及版权等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。