be动词后面跟动词的什么形式?
be动词后面的动词形式有三种可能:
-ing:现在进行时,I'm trying to give you the right answer.
-ed:被动语态,I'm told that you don't know her.
to do:
1、表示按计划或安排要做的事.例如:They said goodbye,little knowing that they were never to meet again.他们告了别,不知道以后再也不会见面了。
2.表示“应该”,相当于should,ought to.例如:You are to report to the police.你应该报警。
3.表示“必须”,相当于must,have to.例如:The letter is to be handed to him in person.这封信必须亲手交给他。
4.表示“想,打算”,相当于intend,want.例如:If we are to be there before ten,we’ll have to go now.如果我们要在十点前到,我们现在就得走。
5.用于第一人称疑问句,表示征求对方意见。
6.用于否定句,表示“禁止”,相当于mustn’t.例如:You are not to smoke in the reading-room.你不可以在阅览室里吸烟。
7.表示“可以,可能”,相当于may,can.例如:The news is to be found in the evening paper.这条消息可以在晚报上见到。
8.were to do sth.用于if或even if / even though从句中,表示对未来的假设。
9.be to blame(该受责备,对某坏事应负责任)与be to let(待出租)两种结构中,用不定式的主动形式表示被动含义。例如:This house is to let.这房子要出租。
拓展资料:
关于be动词
be动词,意思和用法很多,一般的意思是:是,此种用法,有多种变化形式,is,am,are,was,were,being,beenteen,to be.另外,be动词还有成为的意思。根据句子中不同的人称、数和时间,型态,应该选择相应的be动词。
一、被动语态
被动语态的基本结构为be+done(Be动词+动词过去分词)
一般现在时:am/is/are+done
一般过去时:was/were+done
一般将来时:will+be+done
现在进行时:am/is/are+being+done
过去进行时:was/were+being+done
现在完成时:have/has+been+done
过去完成时:had+been+done
二、“Be”除了原形的“be”之外,还有另外七种形式:am, is, are, been, being, was, were。
要看语句的时态:
如果是一般过去时,就用was/were。
如果是一般现在时,就用am/is/are。
如果是一般将来时,就用will be。
一般过去时:
第一人称单数和第三人称的单数形式,则用was。
第一人称和第二人称、第三人称的复数,则用were。
第二人称单数也用were。
一般现在时:
第一人称单数形式,用am。
第三人称单数形式,用is。
第一人称复数、第二人称复数、第三人称的复数形式,则用are。
第二人称单数也用are。
一般将来时:will be
三、例句对照
1、当做主动词时,“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:
The man is a science teacher.这个男子是一位科学教师。
Mary's new dresses are colourful.玛丽的新衣服色彩鲜艳。
I have been there before.我以前去过那里。
2、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:
Is the man a science teacher?
Are Mary's new dresses colourful?
Have I been there before?
Is mother in the kitchen now?
3、当“be”要在祈使句中出现时,陈述句可借助助动词“do”,否定句必须在前加上助动词“don't”,如:
Don't be silly!
Do be obedient!
Be careful!
Don'tbe a fool!
4、“Be”有两种缩写法,如下:
He's not...../He isn't....
You're not...../You aren't...
但“am + not”的缩写法只有一个:I'm not.有人用“ain't”, 但这并不是标准英语。
(资料来源:百度百科:be动词)
两种。一、be有(is am are和was were)一是在现在进行时、过去进行时,这两种时态是后面的动词是ing形式,表正在发生的事;二、被动语态,后面加done,加的是动词的过去分词,被动语态强调的是事、物,而不是的人。
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