while和and都可以是连词,但是意思不一样哦。 while当连词时,表示轻微转折,前后必须是2个结构一样的完整句子,翻译过来是“而……”。比如:Tom is lazy, while his father is hard-working. (Tom很懒惰,而他的父亲很勤奋。) and既可以连接2个句子,也能连接2个词或者短语,表示并列或者发生先后顺序。 比较一下: She is a good-looking girl, while he is ugly.(不用and) She is a good-looking girl, and she likes dancing.(不用while)