作业帮be是什么意思 英语啊
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be是什么意思 英语啊
be是什么意思 英语啊
be是什么意思 英语啊
be动词
be美音：[bi]英音：[bi:] be 助词 v.aux.1.(与动词的现在分词连用,构成各种进行时态)正在...,在...I won't be free this afternoon.I'll be seeing a friend off.我今天下午没空,我要给朋友送行.What were you doing from 9 to 11 this morning?今天上午九点到十一点你在做什么?He is working.他在工作.2.(与及物动词的过去分词连用,构成被动语态)被...The problem was solved long ago.It will be discussed tomorrow.3.【旧】(与不及物动词go,come,rise等的过去分词连用,构成完成时)已经...The sun is set.太阳已经下山.4.(与动词不定式连用,表示职责、义务、意图、约定、可能性等)应该做...,必须做 ...;预定做...;会做...The President is to visit Japan next week.总统将于下周访问日本.You're to do your homework before you watch TV.你应该做了功课再看电视.不及物动词 vi.1.是[L] At that time he was the chair of the department.当时他是系主任.I am a teacher and they are my students.我是老师,他们是我的学生.She is very young.她非常年轻.2.(表示时间、度、量、价值等)是;值;等于[L] The watch is 100 dollars.这表值一百元.3.(常用祈使语气或不定式)要,得;成为;变成[L] Be quiet,please.请安静.4.(与there连用)有[L] There are a lot of tourists there.那里有许多观光客.5.逗留,(继续)呆[L] He will be here all next week.下周他将一直呆在这儿.6.在[Q] Tony is in the office.托尼在办公室里.7.存在 Whatever is has every reason for being.存在的东西总有其存在的理由.8.听任 If she's sleeping,let her be.如果她在睡觉,就别惊动她.BE 缩写词 abbr.1.=Board of Education 【旧】教育部 2.=BEelzebub 魔王 （BE） Be 【化】元素铍(beryllium)的符号 【医】碱剩余 be- 前缀 pref.1.表示"彻底","极度" 2.表示"使","使显得" 3.表示"以...相称","视作" 4.表示"缀以","覆盖以" B.E.缩写词 abbr.1.=Bachelor of Education 教育学士 2.=Bachelor of Engineering 工程学士
相当于中文里的“是”
有时态和人称数之分，一般现在时 I am, He is, She is ,They are,We are
过去时 was ,was,was,were,were
在情态动词can may must后可直接用原型be
完成时 have/has/had been