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一、引导词when和while的错用when和while往往会出现辨析错误。when既可表示时间段(可以与while互换),也可表示瞬间(不能与while互换)。当表示“正当……时候”时,when只能跟在前一分句之后,并且常与be about to/on the pointof等短语连用。while只指时间段,从句的动作必须是延续性动词,有时为了突出主句和从句的对比,表示转折。例1 One Friday,we were packing to leave for a
First, the guide when and while the wrong use of when and while often appear to identify errors. when can mean time (interchangeable with while), but also instant (not with while swap). When can be said to be “right ... time”, when can only follow the previous clause, and is often used in conjunction with phrases such as about to / on the pointof. While only refers to the time period, the action of the clause must be a continuous verb, sometimes in order to highlight the comparison of the main clause and the clause, that turning point. Example 1 One Friday, we were packing to leave for a