有没有这个说法:I mustn't have been a doctor.
有没有这个说法:I mustn't have been a doctor.
英语翻译A.can't have been B.mustn't have been C.shouldn't have b
have been I have been a doctor before.I had been a doctor be
有个句子I mustn't have too much potato because I'm on a diet.
有没有be have been的说法?
有mustn't have done这个结构么?表示什么?
有没有have doing这个说法?我们都知道现在完成时有have done 和have been done 两种用法,
He must have been there yesterday,___he?A.must B.mustn't C.w
he can't haue been a dcntist.he must have been a doctor.
有没有这样一种说法:I have a broken heart
I have just been to I have got a bad cold A.the doctor B.the
有没有have been doing 这个时态?