1、However, but, yet, while, whereas 表转折 …

8. when 可用作并列连词,表示“这时(突然)”;while 也可以用作并列连词,表示“而”、“却”(表示对比);但 as 则没有类似用法。 如: We were about to start …

while,英语单词,主要用作 连词、动词、名词、介词 和 副词。作连词的意思是“当……的时候;与……同时”,作动词的意思是“消磨时间”,作名词的意思是“一 …

While and whilst mean the same when we use them as conjunctions. They both mean ‘during the time that something else happens’, or ‘in …

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