sometimes often usually的区别

sometimes often usually的区别

主要区别在频度
always是频度最大的词,意为总是；永远.如:I shall always remember my first day at school.我将永远记住我上学的第一天.
usually意为通常,即很少例外,频度仅次于always.如:What do you usually have for breakfast?你通常早餐吃什么?
often意为经常,在频度上不如usually那么频繁.
如:Li Ping often does his homework in the afternoon.李平经常在下午做作业.
sometimes意为有时候,频度比often小,表示动作偶尔发生,间断较大.
如:1.I sometimes go to the library.我有时去图书馆.
2.Sometimes I read a book in the evening.我有时在晚上看书.