unable和have not been able哪个更常用,有什么不同

unable和have not been able哪个更常用,有什么不同 Your I have not been unable to breathe 是什么意思?Your I have not been unable to breathe 和You get sick heavily是什么意思呢?麻烦大家帮我翻译一下.谢谢了. You have been unable to escape You have been unable to escape 急问 have not been to have not been able must not have been;could not have you have not been 如上 You have not been to France,have you?的回答肯定和否定的 have since been 和 have been since have been 和have ever been区别! 英语翻译Her class(are/has been/is/have been)unable to agree on a monitor so far. Hardware changes might not have been detected MS SAM FILES HAVE NOT BEEN around you,you did not care; when you care about,he has been unable to you!Cherish the people around. Unable to get rid of the original before I have always been those people and objects~~~是什么意思?Unable to get rid of the original before I have always been those people and objects···是什么意思 You have not been to France?的肯定和否定回答 Because too many invalid attempts have been made to answer your security questions,we were unable t求翻译