be unable to do与be not able to do有什么区别
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
be able to do和do有什么区别.
be doing与be going to do有什么区别?
be not able to be unble to do 的区别是什么?请举列回答.
be to do be about to do 有什么区别
be able to do sth 等于什么
be able to do sth
关于be able to do
may not able to do sth 还是 may not be able to do sth?
Do not install B you to be able to die