often usually always的区别:含义不同、用法不同。often的含义为“常常”,表示动作重复,中间有间断;usually的含义为“通常”、“平常”,表示很少有例外;always的含义为“总是”、“永远地”,表示动作重复状态继续,中间没有间断。 1、often的含义及用法 often作为副词,...
(2) Does Cathy go to school early? Do you know? Do you know if /whether Cathy goes to school early? 注意:只能用whether而不用if的三种情况如下: ①与or not连用:They asked us w...
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