[文法] 逗號問題

作者: ronan001 ("宅"貓)   2018-06-07 21:56:24
Our manager instructed us that the current room rate would be quotable only un
til the end of month, when a rate increase would go into effect.
請問為什麼這句話在when前面要加逗號呢?
這個副詞子句算是從屬子句還是補充句?
謝謝
作者: kaifrankwind (大師兄)   2018-06-07 22:42:00
前面主要子句太長,喘口氣用的

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