2023年人教八年级英语上册第2单元知识点归纳总结全面汇总归纳全面汇总归纳.pdf

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+名复 How much+不可名“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 e 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 People can live to 100,but few people can live to 150.There is little time left.I wont 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.Its 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，youd better not believe it.关于那故事，你最好不要相信。5.That sounds interesting.这是“主语+系动词+表语”结构的简单句。sound（听起来），look（看起来），smell（闻起来），taste（尝起来），feel（觉得），seem（好象），grow（变得）,get（变得）等词在英语中可用作系动词，后跟形容词作表语。如：It tastes good.这味道好。The music sounds very sweet.这音乐听起来很入耳。The smoke grew heavier and heavier.烟雾变得越来越浓了。6.percent 名词，意为“百分之”百分数的表示方法：基数+percent(不用复数形式)，percent做主语时，谓语动词的数要根据其后面的名词来确定。50：fifty percent 百分之五十 Fifty percent of the apples are bad.50%的苹果都坏了。Twenty percent of the meat is in the fridge.20%的肉都在冰箱 7.not at all 意为“一点也不”，not 应放在 be 动词、情态动词或助动词之后。The story isnt interesting at all.那个故事一点也没有趣。8.It is+adj.to do sth.做某事是的。It is interesting to play computer games.玩电脑很有趣。9.take,spend,pay It takes sb.some time to do sth.意为“花费某人时间来做某事”。人(sb.)spend 时间/钱 on sth.“买某物花了钱”。人(sb.)spend 时间/钱(in)doing“花费多少时间来做某事”。pay 的主语必须是人，而“花钱买某物”为 pay.for.10.however 副词，意为“然而，可是”，表示转折关系，可放在句首、句中、句末。