unable是不能
have not been able是尝试过了,但是还是不行
unable和have not been able哪个更常用,有什么不同
1个回答
相关问题
-
have been possessing 和 have been having 哪个更合适?
-
have been possessing 和 have been having 哪个更合适?
-
where have you been 和where have you been to 哪个对?有什么不同?
-
be unable to do与be not able to do有什么区别
-
问下be not able to/be unable to/can't 有什么区别
-
"it isn't."和"it's not." 哪个更常用一些,更口语化
-
请问they have been able to do的时态是什么?been able to 和 be able to的
-
have gone和have been 有什么不同?
-
if i had been wearing my hat ,i would not have been able to
-
have been doing 和have+过去分词有什么不同?