I'll never forget the day when the great scientist came to our school and give us a speech.这里的引导词为什么要用when可以用that吗,还有用who和whom的区别例句

I'll never forget the day when the great scientist came to our school and give us a speech.这里的引导词为什么要用when可以用that吗,还有用who和whom的区别例句
I'll never forget the day when the great scientist came to our school and give us a speech.
这里的引导词为什么要用when可以用that吗,还有用who和whom的区别例句

I'll never forget the day when the great scientist came to our school and give us a speech.这里的引导词为什么要用when可以用that吗,还有用who和whom的区别例句
引导时间状语从句用when显然更合适,一般规范语法中是不可以用that替代when.
who 和 whom的区别不用例句,非常简单,如果连接词前面出现了介词,就一定要用whom,否则的话标准语法中人称做宾语则用whom,其他成分用who,但在生活中经常可以随便用.

因为定语从句修饰时间day，所以用when。who和whom的区别是看其在从句中的作用，作从句主语时用who，作宾语或介词宾语时用whom。