be动词是什么意思?什么用法?

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,bein-g,been,to be.另外,be动词还有成为的意思.
be动词的用法
　　be （be/is/are/am/was/were) 　　[bi:] 　　vi 　　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”是个特殊动词；有些语言,如马来文等,并没有“be”这样的动词.　　“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)