'You have been busy 这是什么时态?
'You have been busy 这是什么时态?
have been是什么时态?
have+been是什么时态
一句话的时态问题How long have you been stay here?请问这句话是什么时态,并且说出这种时态
have you ever been to an amusement?是什么时态
Have you ever been to shanghai?这个句子是什么时态
have been working 是什么时态
have been doing是什么时态?
have been to是什么时态?
Where have you been in china?这句话是什么时态?谁能帮我详细分析分析
You will have been waiting for more than two hours 这是什么时态
Have you been corresponding with him?这句话是什么时态?什么用法呢?