the book was written in 1946,-----the education system has saw great changes.问什么空不能说since which 而 只能是 since when.准确答案 谢谢

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the book was written in 1946,-----the education system has saw great changes.问什么空不能说since which 而 只能是 since when.准确答案 谢谢

the book was written in 1946,-----the education system has saw great changes.问什么空不能说since which 而 只能是 since when.准确答案 谢谢
the book was written in 1946,-----the education system has saw great changes.
问什么空不能说since which 而 只能是 since when.
准确答案 谢谢

the book was written in 1946,-----the education system has saw great changes.问什么空不能说since which 而 只能是 since when.准确答案 谢谢
which指代sth.when指代time,这里想表达的意思是自从1946年以来,所以指的是时间只能用when,clear?希望你能给我分,新手上路呀,请多多支持!

从句在不缺成分的时候要选择关系副词,缺成分的时候选择关系代词。
可以看出-the education system has saw great changes.这句话主谓宾都完整,不缺成分,所以选择副词。副词包括when where why。我们不知道不是那一年见证了很多巨大的变化,而是自从那一年开始就见证了很多变化,所以选择since when....

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从句在不缺成分的时候要选择关系副词,缺成分的时候选择关系代词。
可以看出-the education system has saw great changes.这句话主谓宾都完整,不缺成分,所以选择副词。副词包括when where why。我们不知道不是那一年见证了很多巨大的变化,而是自从那一年开始就见证了很多变化,所以选择since when.

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