仁爱版英语七年级下册Unit5 Topic1 语法专项ppt课件(频度副词).ppt
Unit5 Topic1语法专项课件（频度副词）,频度副词的定义,频度副词表示动作发生或状态存在的频率。,常用的频度副词及频度副词短语有：always, usually, often, sometimes, never, once a week, every day等。对频度副词或频度副词短语提问时，用how often，表示“多久一次”。,频度副词的分类,模糊频度副词always, usually, often, sometimes, hardly ever, never,精确频度副词every day, once a week, twice a month, three times a year,频度副词对比图,always的频度是100%，意为“总是；永远地”。,usually的频度是70%左右，意为“通常；平常”。,often的频度是50%左右，意为“常常”。,sometimes的频度是20%左右，意为“有时”。,hardly的频度是5%左右，意为“几乎不；简直不”。,never的频度是0，意为“从来不；永不”。,频度副词经典例句,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. 我总是在星期天打扫卫生。,频度副词经典例句,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。,频度副词经典例句,3）often的频率比usually又略低些，约为60%-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？,频度副词经典例句,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.珍妮经常午饭吃一个三明治。但她有时候喝汤。,频度副词经典例句,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。,频度副词的位置,通常频率副词放在实义动词之前， be动词，情态动词或助动词之后。但是sometimes最活跃。它既可以在句中也可以在句首，还能在句末。,频度副词的位置,She is always ready to help others.,（be动词后）,My parents have never been to Beijing.,（助动词后）,We often go there.,（实义动词前）,Sometimes she writes to me.,（句首或句尾）,频度副词的用法,1. often, always, usually等通常和一般现在时连用，表示现在经常或反复发生的动作。例：It often rains here in April. 这儿四月份常下雨。,频度副词的用法,2.always与进行时连用时，并不强调动作正在进行，而是表示赞叹、厌烦等情绪。例：He is always thinking of others. 他总是想着别人。As a boy, he was always making trouble.他小时候总是惹是生非。,（表赞扬）,（表厌烦）,频度副词的用法,3. 对频度副词提问时，用how often。例： I write to my brother sometimes.How often do you write to your brother?,易错点1,how often与how long/far/soon的用法区别,（多用于一般现在时）,（多用于完成时）,（多用于一般将来时）,易错点2,sometimes与some times/some time/sometime,易错点3,hardly与hard辨析,例： Lucy hardly ate anything. 露西几乎什么都没吃。 The ice is hard enough to skate on. 这冰很硬，可以在上面滑。,【典例1】 Zhang lili, “The most beautiful teacher”, is good to her students. Yes, and she is _ popular with her students. A. sometimes B. never C. always D. hardly,考查频度副词。always总是，sometimes有时，never从不，hardly几乎不。be popular with 深受的欢迎。根据题意，答案选C。,【典例2】 Did you go to the cinema to see 3D Titanic last night? No, I _ go to the cinema. The tickets are too expensive. A. hardly B. sometimes C. only D. usually,考查频度副词。hardly几乎不，sometimes有时，only仅仅，usually经常。由too expensive（太贵）可知，“几乎不看电影”，所以答案选A。,【典例3】 _ is it from home to the shopping mall? About fifteen minutes ride. A. How long B. How far C. How often D. How much,考查频度副词。How long多久，How far多远，How often多久一次，How much多少钱。根据About fifteen minutes ride可知，问的是距离，故答案选B。,
