we can learn about some knowledge which are helpfu

发布时间：2021-02-22 11:17:44

we can learn about some knowledge which are helpful in our future.这句话对吗

网友回答

which 改为that
因为先行词前有some
还有are 改为is,因为knowledge 不可数
======以下答案可供参考======
供参考答案1:
前面有some,all这一类的词的时候，定语从句只能由that引导。不能用which
以上问题属网友观点，不代表本站立场，仅供参考！