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1、频率副词 (补充材料)一、常见的频率副词。always,usually,often,sometimes, seldom,never.1) always表示的频率为100%,意思是总是、一直、始终。 I always do my cleaning on Sundays. 我总是在星期天搞卫生。2)usually与always相比,表示的频率要低些,约为70%-80%。意思是通常。Plants are usually green. 植物通常是绿色的。Usually she goes to work by bus. 她通常乘公共汽车去上班。 3)often的频率比usually又略低些,约为60%-
2、70%,意思是经常、常常。Do you often write to them? 你常给他们写信吗? Does Fred come here often? 弗雷德常来这儿吗? 4)sometimes的频率比often又低些,约为50%sometimes30%,意思是“有时、不时”。Jenny usually eats a sandwich for lunch. Sometimes she eats soup.5)seldom 的频率比sometimes还要低些约为20%左右,意思是“很少”。My father was seldom at home on Sundays. 我父亲星期天很少在家。
3、6)never与always完全相反,是100%否定,意思是“从不,决不,绝不,总是不“。I can never stop. 我绝不会停止。Li Ming never wears dresses. 李明从不穿裙子。I would never do anything to hurt him. 我绝不会做任何伤害他的事情。二、频率副词示意图alwaysneverusuallyoftensometimesseldom0三、频率副词在句中的位置:通常频率副词放在行为动词之前, be动词,情态动词或助动词之后。四、注意的问题always的完全否定形式是never,部分否定形式是not always.例如:She always wears a dress. 她总穿裙子。(改否定句)1)She never wears a dress. 她从不穿裙子。(彻底否定)2)She does not always wear a dress. 她不总穿裙子。(部分否定)有如:The rich are not always happy.富有未必是幸福的。