He should have finished by now, ...?
A. don't you think?
B. shouldn't he?
C. hasn't he?
He has been writing letters all afternoon , but he shuold have finished them by now, 空 空 ?
怎么写反义疑问句
【答】以下几种情况都正确:
(1)He has been writing letters all afternoon , but he shuold have finished them by now, shouldn't he?
(2)He has been writing letters all afternoon , but he shuold have finished them by now, hasn't he ?
如:They should have arrived there by now, shouldn't they / haven't thay ? 现在他们应该已经到达那里了,对不对?(摘自赵俊英:《现代英语语法》p.1135)