题目内容：

He's never sung English songs before,_____ he? _______.It's his second time to sing in English.

优质解答

He's never sung English songs before,__has___ he?___Yes____.It's his second time to sing in English.有never,相当于否定句,反义疑问句的时候,就不用否定了.回答YES/NO,的时候,要先把句子变成肯定句....