七年级下册英语语法《Sometimes的用法》知识点整理.doc

Sometimes 的用法Sometimes I work in the day and sometimes at night.我有时候在白天工作，有时候在晚上工作。sometimes是频度副词，表示“有时候”。如：Sometimes the little girl laughs，and sometimes she cries这个小女孩有时笑，有时哭。Sometimes I went to school by bike and sometimes on foot我有时骑自行车上学，有时步行去。sometime是副词，表示“曾经，某时，有朝一日”，常同过去时或将来时连用。如：Will you go and see your teacher sometime？你哪一天去看看你的老师好吗？The accident happened sometime last month事故发生在上月某一天。some time是名词词组，通常表示“一段时间”。He rang again after some time过了一会儿他又打电话来了。It will take some time to translate this book翻译这本书要费一些时间常用的频度副词有四个,即always, usually,often,sometimes。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：She is often late for school. 她上学经常迟到。He usually goes to bed at about 12. 他通常(午夜)十二点钟睡觉。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：I sometimes think that it is a great mistake.我有时想这是一个大错。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。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：I sometimes go to the library.我有时去图书馆。Sometimes I read a book in the evening.我有时在晚上看书。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：A great scholar is not always a very wise man.大学者未必一定是极聪明的人。We g