问题补充:
The boy has to stay at home to look after his litter sister, ?
A. does he
B. has he
C. doesn’t he
D. hasn’t he
答案:
A. does he
B. has he
(答案→)C. doesn’t he
D. hasn’t he
解析:在反义疑问句中,如果前半句是肯定句,则后半句用否定句;如果前半句用否定句,则后半句要用肯定句。因为题干的前半部分用的是肯定句,故后面应该用否定句,所以排除AB;又因为前面的has 不是助动词,而是实意动词,应该借助does来问。所以本题选C。