说明4： 疑问代词还可引导名词性从句。例如：

　            I can't make out what he is driving at. 我不知道他用意何在。

　　       　 Can you tell me whose is the blue shirt on the bed?　 你能告诉我床上的蓝衬衣是谁的吗？

Much of what you say I agree with, but I cannot go all the way with you.

你说的我大部分同意，但并不完全赞同。