usually/always/often可以替换使用吗?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/11/09 00:57:13

不可以的,因为含义不同
频度副词是副词的一种
常用的有四个,即always,usually,often,sometimes.
现将它们的用法归纳如下:
一、频度副词在句中的位置.
频度副词在句中习惯上位于be动词、助动词之后,行为动词之前.
如:1.She is often late for school.她上学经常迟到.
2.He usually goes to bed at about 12.他通常(午夜)十二点钟睡觉.3.When do you usually get up in the morning?早上你通常什么时候起床?
sometimes是个特殊的频度副词,既可以放在be动词、助动词之后,行为动词之前,也可以放在句首,还可以放在句尾.
如:
1.I sometimes think that it is a great mistake.我有时想这是一个大错.
2.Sometimes I help my mother in the house.有时候我帮助妈妈做家务.often可以放在句中,也可放在句尾,习惯上不放在句首.
如:We have been there quite often.我们经常到那儿去.
这些频度副词的位置与句中谓语动词有无助动词有关.句中没有助动词时,副词置于动词be之后,其它动词之前.
二、表示频度方面的区别.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.
三、频度副词与not连用时,表示部分否定；对频度副词进行提问时,要用how often.如:
1.A great scholar is not always a very wise man.大学者未必一定是极聪明的人.
2.We go to the cinema sometimes.(对划线部分提问)
How often do you go to the cinema?

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