I shouldn't be here. 为什么要加be

I shouldn't be here. 为什么要加be It means Be quiet We shouldn't meke noise here. 请问“I shouldn't have been here.”怎么翻译? be here和be in here有区别吗?吸血鬼日记中有一句You know you shouldn't be in here 英语翻译我不应该迟到 是I shouldn't be late.为什么不是I shouldn't be late for A:I was told to be here before five.B:Oh,you ____.I'm sorry for not telling you that we have changed the plan.A.couldn't B.needn't C.can't D.shouldn't Be quietmeans you_____make noise here.A.should B.shouldn't C.can It means 'Be quiet'!It means we shouldn't ( ) ( )here .同义句转换 I'm here,don't be -Must I wait for you here now?-No,you ___,You may be back in haif an hour.A.don't have to B.mustn'tC.can't D.shouldn't选什么 为什么 i didn't break the window.It __ the truth.He is lying.can't be mustn't be shouldn't isn't 选哪个A.can't be B.mustn't be C.shouldn't be D.isn't 急 _____l swim here?i'!m sorry,children _____swim alone here,A,Must can't B,Can,mustn't C,May,must D,must,shouldn't i shouldn't be late for the class again 改祈使句 every single day i pray ,that really things shouldn't never be this way.什么意思 I shouldn't be playing with his things.这是什么用法? sometimes i do things i shouldn't you shouldn’t be doing anyway Life shouldn't be dependent on