谁能帮我分析一下这个句子的成分,还有 句中的where可不可以用that代替?
The expansion of desert like conditions into areas where they did not previously exist is called desertification
主要是句子的前面那部分不是很了解
人气：384 ℃ 时间：2019-10-26 14:04:50
解答
The expansion of desert is called desertification
主句
like conditions into areas 状语
where they did not previously exist定语修饰areas ,不可以用that,where是副词,专门指地点
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