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 didnt 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.
Kates 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.
太原家乐福店被指价格欺诈
谷歌地图重登苹果应用商店
朝鲜誓言要发射更多卫星
美联储官员对QE3期限产生分歧
美国流行文化垄断面临挑战
丰田了结“无故加速”官司
美校园枪击案嫌犯的人生轨迹
美国商学院遭遇募资难
主题公园运营商海洋世界申请上市
重稀土获矿商青睐
康州校园枪击案使得美国人重新审视枪支法
给各国领导人的新年建言
瑞银对自身风险缺乏监控
火箭成功发射凸显朝鲜技术水平提升
分析:沃尔沃努力提振在华销量
2012年英国大公司高管基薪仅涨3%
FT社评:亚洲和平繁荣需中日美三方努力
FT社评:安倍应该先解决经济问题
世界末日不在眼前
苹果应用下载量已达400亿次
圣诞老人运动会 香港选手放异彩
在亚洲欢度圣诞的首选之地
日本车企2012年在华销量下滑
透过科幻片看未来经济
安倍晋三当选日本首相
投资东南亚股市须谨慎
广东催生智能手机新品牌
赖斯退出美国国务卿角逐
公司“首席”何其多
韩国:朝鲜或准备发射卫星
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |