They walked in the streets for two hours carrying a sign which said,"we need two tickets."
问题描述：
They walked in the streets for two hours carrying a sign which said,"we need two tickets."
划分以上句子主谓宾以及关系代语which 的用法,此句中为什么不用what作关系代词?
答
主语是they,walk是谓语,in the streets 是地点状语,for tow hours 是时间状语,carrying a sign 是伴随状语,表示边走边说,walk的时候,举标志这个动作正在发生,所以用carrying.which said,"we need two tickets."做 sign的定语从句,表示sign上写的内容.不能用what,因为这句“we need two tickets”,是sign上面写的,在定语从句里,要用which,或者that来引导.而关系代词“what”一般引导的是宾语从句,不能引导定语从句.