have been + 形容词 和be+形容词 有什么区别?

have been + 形容词 和be+形容词 有什么区别? have been done 和 to be done have been 后接形容词 和 have been doing 的区别 have been和be been是一个意思吗? have been=be have been premature My negative impression of Nathan may have been premature.He's turning out to be an excellent market analyst.这句话里的have been premature have been后面不是接动词吗,premature是形容词啊 also would be,would also be和would be also有什么区别?类似的还有“always have been”,have always been以及have been always. may have been和may be怎么翻译 have been done和be done的区别 must be和must have been有什么区别he must have been sleeping.为什么这里要用must have been而不用must be Have been Be请问She may be swedish .和 She may have been swedish.的区别.have been什么意义?谢谢. 存在have been doing、have being doing、和have be doing吗? be said to be doing和be said to have been doing的区别 have since been 和 have been since have been 和have ever been区别! might be和 may have been的区别?还有是might do和 may have done 有关have done 和be done的问题,什么时候用be done 什么时候用 have 以及have been done. 真纠结的英语词组的区别!be in 和 be ; have been in 和 have been;the last week 和 last week……1.be in 和 be （have been in 和 have been）的区别 例：They have been in China for two years. They have benn Chian for two yea