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unless if not 用法

unless = if not =except if

unless本身就有否定意味,其實就相當於if條件句的否定形式(if not),中文要表達「除非…否則…」、「如果不…」,英文只要用unless就可以,後面一定為肯定句,否則會造成雙重否定的問題。

(繼續閱讀...)


This post first appeared on 莓子貓坊 :: 痞客邦 PIXNET ::, please read the originial post: here

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unless if not 用法

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