为什么用before,不用later.The war left the family scattered,and it was thiry years(他们才重聚,

问题描述:

为什么用before,不用later.The war left the family scattered,and it was thiry years(他们才重聚,

用 before 还是用 later 要看后面的状语从句用什么引导词.before 用在句子前是连词,later 只能是副词.所以,before 后面可以直接跟句子,而 later 在有 thirty years 的句子中如果后面还有时间状语的从句或同位语从句,应该用when做引导词.