关于定语从句的一道英语题

来源:百度知道 编辑:UC知道 时间:2024/06/25 16:17:14
the book was written in 1946,____the education system has witnessed great changes

答案是since when,可是不是the education system has witnessed great changes since 1946 对1946的定语从句,不是用which吗??

本人小菜,请教指点,谢谢!!~要解释哦~
我是说since which
不是which哦~

修饰时间就一定要用when 吗?1946不是表示年吗,用which
若是in 1946才是用when吧!

如果填since when把语序调过来就是
the education system has witnessed great changes since 1946.
如果填which,把语序调过来是
the education system has witnessed great changes 1946
后者缺少介词~
以后,判断关系词都可以把从句语序调成正常语序,然后你就很清楚啦!
希望可以帮到你哦~

后一句是说教育系统有了非常大的变化,用空格里用which就变成了1946年有非常大的变化,一年是很难有非常大的变化的。空格里如果填since which year就对了

in 1946说明是时间状语,当然用when/in which了,the education system has witnessed great changes since 1946 对in 1946的定语从句……
不懂再问我

因为是修饰1946,先行词是时间,所以用when而不是which