在英语中什么时候要用be动词(is,am,are)啊?
在英语中什么时候要用be动词(is,am,are)啊?
最好用例句来说明!
最好用例句来说明!
英语人气:191 ℃时间:2020-05-15 00:47:05
优质解答
现在时 I am,you are,he is,we are,you are,they are (缩略式 I'm,you're,he's,we're,you're,they're),(否定缩略式 I'm not,isn't,aren't),过去时 I was,you were,he was,we were,you were,they were (过去时否定缩略式 wasn't,weren't),过去分词 been,现在分词 being 英语的“be”是个特别动词;有些语言,“Be”除了原形的“be”之外,还有另外七种形式:am,is,are,been,being,was,were.在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).【当主动词时,“be”在性质上属于接系动词(The Linking Verb),后面要有名词、形容词、地方副词或短语作补足语(The Complement).例如:1.The man is a science teacher.2.Mary's new dresses are colourful.3.I have been there before.4.Mother is in the kitchen now.【这四个都是陈述句,可以变成疑问句,方法简单,把主语和“be”或助动词对换位置即可:5.Is the man a science teacher?6.Are Mary's new dresses colourful?7.Have I been there before?8.Is mother in the kitchen now?【当“be”要在祈使句中出现时,它必须借重助动词“do”或“don't”之助,如:9.Don't be silly!10.Do be obedient!11.Don't be a fool!【“Be”有两种缩写法,如下:12.He's not./He isn't.13.You're not./You aren't...【但“am + not”的缩写法只有一个:14.I'm not.有人用“ain't”,但这并不是标准英语.谈过了“be”作主动词的功能,现在看看“be”作助动词时,有些什么用法:【1.】“Be + 现在分词”以组成进行式时态(Continuous Tenses),如:15.Tony's maid is washing his new car.16.The children are playing in the field.17.Samuel was eating when I came in.18.We have been living here since 1959.【2.】“Be + 过去分词”以组成被动语态(The Passive Voice),如:19.Her money in the drawer was stolen.20.A number of good jobs are taken up byforeigners.21.David studied in Taiwan but has been trained as a language lecturer in America.22.Can all the wonderful birds be found in our Bird Park?23.The disobedient boy was told to stand out- side the classroom.24.Steps are being taken to reduce traffic con- gestion during peak hours.25.Dishonest students will be immediately dealt with.
我来回答
类似推荐
猜你喜欢
- 1下面这句英语中的is with从语法结构和含义上如何理解?
- 2作者为什么要 捉蛤蟆,鞭数十,驱之别院 ?表现他幼小心灵中怎样的思想感情?
- 3已知四边形ABCD的周长是24cm,边AB=xcm,边BC比AB的两倍长3cm,边CD的长等于AB与BC两条边长的和. (1)用含x的代数式表示边AD的长; (2)求x的取值范围.
- 4Need I pass the bowl to you -------------- A.Yes you need B.Yes you do C.Yes please D.Yes I need
- 5neither do i的用法
- 6过去进行时与When连用时,When后面应该跟过去进行时还是过去式?……
- 7The child stood there____his eyes fixed____the camera A.and,on B.with,on C.with,at D.by,in
- 8英语翻译
- 9These的对应词是什么?(英语)
- 10求描写舞蹈,音乐,绘画的散文,