een用在完成时和被动句中,完成时包括现在完成时和过去完成时.现在完成时的构成是has/have+been/done,过去完成时的构成是had+been/done；一般来说,都有一定的提示词,比如说现在完成时的标志性的词有since,already等,过去完成时的句中的动词是过去式；而被动句的主语如果是物,那就用被动语态.
请问been的具体用法比如have been,had been,been in use（前加什么后加什么?）been用在
2个回答
相关问题
-
请问HAS BEEN和 HAVE BEEN HAD BEEN的用法以及分别加DONE后的用法
-
has been / have been /had been …………
-
had been和havev been中为什么要加been?
-
have been / has been / had been 的区别
-
have been是什么我不知道英语现在完成时have been有什么用,been不是可有可无的吗?那为什么要加been
-
had been 和 has/have been的区别是什么?
-
have been to 和 have been in 和have been on有什么区别
-
had been和have been有什么区别?请举例
-
have done.have been done .had done.had been done 有什么区别?怎么用?有
-
been in have been to have been on的意思以及用法