在什么情况下会用到be的原形?
1、情态动词后  You must be strong.
2.不式  I want to be a doctor.
3.will 后, I will be a doctor.
教科研工作计划4.作主语  To be a doctor is his dream.
5. had better  后, You had better be careful.
6.动词词组中, 如let sb  do sth , make sb do sth. ,want sb to do sth.等  Let's be carefu.
快速成长I make you be carefu. I want to be strong.
1.前面跟情态动词的时候
如: He will/should/must be here then. 那时他将/应该/必须在那儿.
2.祈使句首
如: Be careful,there're bears hidden in the bushes.小心点,灌木丛中有熊出没.
3.连接不定式
如: What do you hope to be in future?  你将来希望从事什么工作?
你记住以下几个简单的原则即可:
1、一个完整的句子里面一定要有个动词。(如果遇到第二个动词则前面加"to")
2、will,would, shall, must, 等助动词后面必须用原形动词;
3、形容词前面一定要用 be 动词(is, are, was, were, be)“be+adj.”这种组合是固定的。空灵的意思是什么
4、be + p.p(过去分词)--该过去分词就当做形容词用。例如:be relaxed(放轻松);be boxed(用纸箱包装的)
1. 什么情况下用Be? 借助外加助动词如do,did.或者在情态动词如can,will,would,could,should,may,might之后都必须使用be, 而不能直接用am is are. 例如,要说He can be a teacher. 而不能说 He can is a teacher. 同样的,He is a teacher 是正确的说法,He be a teacher 就是错误的说法了。
be在will can must shall等情态动词后面,都是用动词原形简易画画图片大全be。
主语后面直接跟be的话就不用原形的be了,要用am is are
      he will be happy~一般来说,情态动词,诸如 MUST, SHOULD, OUGHT TO,CAN,COULD, 后面都用动词原型或者BE。
I must go now. (我必须走了)这里的GO 就是原型动词。
He ought to be happy. 他应该快了些(BE动词原型)
     
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