是可以套着用的 你的这句话没什么太大的问题 不过时态还是要修改一下 要注意宾语从句中时态的呼应 当knowed是这个句子中的宾语从句的主句谓语动词 而happened是宾语从句的谓语动词 按理解knowed发生在happened之后 而你的knowed用的是过去时 所以happened的时态应该是过去完成时 there is nobody who knowed what had happened yesterday.
there is nobody who knowed what happened yesterday. 此句明显有问题- -. 应该是 nobody knew that what had happened yesterday. that what had happened yesterday.此句是从句,是宾语从句.that可以省略...应该- - 还有啊,你...