often是经常,表达一种行动I often go to school by bus.我经常乘公车上学usually是通常,表示的是习惯I usually go to school by bus.我通常是乘公车上学usually还常被用于句首,often不能这样用：Usually,I like to g...
often是经常,表达一种行动I often go to school by bus.我经常乘公车上学usually是通常,表示的是习惯I usually go to school by bus.我通常是乘公车上学usually还常被用于句首,often不能这样用：Usually,I like to g...