为什么呀？ 我觉得两个都可以！能解释清楚些吗？谢谢啦啊 Did you know ( ) ? A If he bought? a carnera yesterday? B Where he lives? He said he knew ( ). A Where the manager lived ? B Where the manager lived in? 能帮我再解释一这两道题吗？
A Would（Could ) you ...?这句型不是过去时，而是语气更婉转，所以不能用过去完成时。 Did you know ( if he bought a camera yesterday )? Did是过去时， 所以宾语从句应该与did一致。 He said he knew ( A ). B多了介词in ,因为 where 是副词。
