not able 与unable的区别

be unable to do与be not able to do有什么区别 be not able to do sth be unable to do sth区别 问下be not able to/be unable to/can't 有什么区别 not be able to =be unable to? 这个词组的否定形式是什么 able与capable的区别 be able to与can 的区别 be able to 与 can的区别 can与be able to的区别 根据英文释义写出单词d____:not able to hear welld____:unable to seec___ They stood there,unable to make adecision.为什么不能用not able to Sometimes silence is not only unable to tell与他相反的英文怎么说呀 may be able to与be able to之间的区别