1·Why don't you ask his advice?
你为什么不征询他的意见？
—— 《牛津词典》
2·Why don't you have a quick kip?
你为什么不小睡一会儿呢？
—— 《牛津词典》
3·Why don't you get yourself a car?
你为什么不买辆汽车呢？
—— 《牛津词典》
4·Why don't you give him up?
你为什么不与他一刀两断呢？
—— 《牛津词典》
5·Why don't you shut your big mouth?
为什么不闭上你的嘴！
—— 《柯林斯英汉双解大词典》
6·Why don't you come skating tonight?
今晚来溜冰好吗？
—— 《牛津词典》
7·You look hot—why don't you peel off?
你看来很热—为何不脱掉衣服？
—— 《牛津词典》
8·Why don't you two kiss and make up ?
你们两个干吗不和好算了？
—— 《牛津词典》
9·Why don't you ask him for his advice?
你为什么不征求他的意见？
—— 《牛津词典》
10·Why don't you take a few days' leave?
你为什么不休几天假？
—— 《柯林斯英汉双解大词典》