人教版八上英语U2知识点及考点习题

2 Unit2 How often do you exercise? 【重点语法】 1. 频率副词: always, usually, often, sometimes, never 频率副词在句中通常放在实义动词之前, be动词或助动词之后。常用于一般现在时态中。 2.“次数”的表达方法 一次 once， 两次twice，三次或三次以上：基数词+ times, 如：three times, five times, 3. how often“多久一次”问频率，回答常含有频率词组或短语。 常见的how疑问词： 1）How soon 多久（以后） —How soon will he be back?他多久能回来？ —He will be back in a month. 他一个月后能回来。 2）how long “多久” —How long did it take you to clean the house? 你打扫房子用了多久？ —It took me half an hour to clean the house. 我打扫这房子用了半小时。 3）How many+可数名词复数。 How much+不可数名词。 “多少” 问数量（how much 还可问价格） 【重点短语】 1. go to the movies 去看电影 2. look after = take care of 照顾 3. surf the internet 上网 4. healthy lifestyle 健康的生活方式 5. go skate boarding 去划板 6. keep healthy=stay healthy 保持健康 7. eating habits 饮食习惯 8. take more exercise 做更多的运动 9. the same as 与什么相同 10. be different from 不同 11. once a month一月一次 12. twice a week一周两次 13.make a difference to 对......有影响/作用 14. most of the students=most students 15. shop=go shopping=do some shopping 购物 16. be good for 对......有益 17. be bad for 对......有害 18. come home from school放学回家 19. of course = certainly = sure 当然 20. get good grades 取得好成绩 21. keep/be in good health 保持健康 22. take a vacation 去度假 【词语辨析】 1. maybe / may be maybe 是副词，意为“大概， 可能，或许”，一般用于句首。May be是情态动词，意为“可能是...，也许是...，大概是...”. The baby is crying. Maybe she is hungry. The woman may be a teacher. 2. a few / few / a little / little a few (少数的，几个，一些) a little (一点儿，少量) 表示肯定 few (很少的，几乎没有的) little (很少的，几乎没有的) 表示否定 修饰可数名词 修饰不可数名词 People can live to 100, but few people can live to 150. There is little time left. I won’t catch the first bus. Could you give me a little milk? 3. hard / hardly hard作形容词，意为“困难的，艰苦的，硬的”；作副词，意为“努力地，猛烈地”。hardly为副词，意为“几乎不”。 The ground is too hard to dig. I can hardly understand them. It’s raining hard. The people can hardly go outside. 4. As for homework , most students do homework every day . as for...意思是“至于；关于”，+名词、代词或动词的-ing形式（即动名词）。 如： As for him，I never want to see him here. 至于他，我永远不希望在这里见到。 As for the story，you'd be