知识扩展
词语辨析
adj.(形容词)alternate，periodic
这两个词的共同意思是有规律地重复再现。alternate指两件事物交替出现或一件事物每隔一段时间出现；periodic指可预测的周期性发生。v.(动词)alternate，rotate
这组词都指“轮流”“交替”，其区别是alternate指两者间“轮流”，rotate则指三者或三者以上。例如The manager said he will alternate Jane and Joe as editor经理说他会让简和乔轮流做编辑。He told me that he will rotate Caddy，Keat and Ilott as his teacher他告诉我他会让卡迪，基特和伊洛特轮流当他的老师。alternate between，alternate with这两个短语的区别在于1.alternate between的意思是“相互交替”，alternate with的意思是“与之交替”。2.alternate between一般接and连接的并列宾语，而alternate with则接名词或代词作宾语。
词组短语
alternate with相间；alternate between在两种状态中交替变化；时而…时而…
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