小升初英语语法:Be的四个功能归纳

时间:2024-09-09 15:08:18 基础英语 我要投稿
  • 相关推荐

小升初英语语法:Be的四个功能归纳

  be是一个多功能动词,在初级英语里可见四种用法:

小升初英语语法:Be的四个功能归纳

  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)

【小升初英语语法:Be的四个功能归纳】相关文章:

小升初英语语法时态归纳07-31

小升初英语语法时态讲解与归纳08-30

小升初英语语法时态归纳讲解11-03

小升初英语语法时态讲解与归纳汇总10-15

2017小升初英语语法复习归纳07-13

2017小升初英语语法复习要点归纳(人教版)10-31

小升初英语语法强调句热门知识点归纳07-19

小升初语文精选知识归纳09-23

小升初英语语法介绍08-18

小升初英语语法大全06-08