八年级上册unit 2讲解与测验.doc
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Unit 2词汇点睛 1基础词汇家务事_______ 互联网________ 健康_______ 百分之_______至少_________ 几乎从不_______ 节目_______ 或许________重点词汇讲解1. how often 是对动作发生的“次数” 提问,询问的是频率 “多久一次”回答可以是：Every day./ Once a week./ Three times a week./ Often./ ...eg：How often do you play tennis?How often do you surf the internet.2. hard / hardly ①. The ground is too to dig②. I can understand them.③. It’s raining ,the people can go outside.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 意为“几乎不”3.maybe / may be ①.The baby is crying she is hungry.②.The woman a teacher .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..”.4.health 名词,健康形容词是 healthy, 健康的通常构成词组：be healthy/ keep healthy/ keep in good health5.help with s.th= help (to )do s.th 帮助做某事6． exercise 的用法1）作可数名词复数 exercises意为“ 运动、体操” 做早操 做眼睛保健操 （2）作不可数名词，意为“练习、习题” eg：I have to . 我必须做大量练习（3）作动词，意为“ 练习、运动 ”eg：— How often do you exercise? 我天天锻炼 7. 注意 sometimes 与几个形似的词的区别a.sometime 是副词，意为 “在某个时候”， “某时” b. sometimes:“有时候”, 是副词。
c.some time 是名词词组，意为 “一段时间”，做时间状语用d. some times 是名词词组，意为“几次，几倍” eg：（1）I met him in the street last month.(2) Will you come again next week?(3) I will stay here for (4) I watch TV on weekends词汇点睛 2基础词汇虽然________ 例如_______ 作者________ 杂志_______多于_________ 少于_______ 然而________ 牙科医生________重点词汇讲解1.percent 百分之 ……与不可数名词和单数名词连用时，动词一般用单数E g: Forty-five percent of the water is clean.与复数名词连用时，动词一般用复数E g: Forty-five percent of the students exercise four to six times a week.2. although 是个连词，虽然，尽管,引导让步状语从句，与 though 同义，但不能与 but 同时出现在一个复合句中，可与 still, yet 同用。
3.however（1）做“不过，然而” ，有转折的含义，相当于 but.eg: However,she has some bad habits,too.(2)是连接副词， “无论如何，不管怎样” ，相当于 no matter how,通常与一个形容词或副词搭配使用，后面接从句E g:I never win,however hard I try. 我无论怎么努力也赢不了重点短语：1.go to the movies 去看电影2.surf the internet 上网3.keep healthy=stay healthy 保持健康4.exercise=take(much)exercise=do sports 锻炼5.once a month 一月一次6.twice a week 一周两次 7.how often 多久一次 8.shop=go shopping=do some shopping 购物9.have dance and piano lessons 上舞蹈钢琴课10.do homework 做家庭作业 11.do housework 做家务事12.junk food 垃圾食物13.be good for 对什么有益 14.be bad for 对什么有害15.want to do sth 想做某事 16.want sb to do sth 想某人做某事17.try to do sth 尽量做某事18.some advice 一些建议 19.keep/be in good health 保持健康 20.drink milk 喝牛奶21.help sb.do sth 帮助某人做某事22.ninety percent of them 他们中的百分之九十23.a 16-year –old high school student 一个 16 岁的高中学生24.have a lot of good habits 有大量的好习惯25.stay up late 熬夜晚的26.more than two hours 超过两个小时27.go to the dentist 去看牙医 句型透视 1一．必背句1. What do you usually do on weekends? I always exercise.2.What do they do on weekends? They often help with housework.3.What does she do on weekends? She sometimes goes shopping.4.How often do you go to the movies ? Once a month. 5.How often does he watch TV? He hardly ever watches TV.6.Does he go shopping? No,he never goes shopping. 二．例句解析1. What does he do on weekends? He usually watches TV.他通常在周末做什么？他通常看电视。
句子是一般现在时，主语 he 是第三人称单数，借助助动词 does在答语中，谓语动词用单三式 watches2. How often do you go to the movies ? Once a month你多久去看一次电影，一月一次how often 是对动作发生的 “次数”提问,询问的是频率“多久一次” Once 是“一次” ， “两次”是 twice,三次以上用“基数词+times”来表示若只对次数提问，则用 How many times“多少次” 3.What’s your favorite program?你最喜欢的节目是什么？What’s your favorite…？=What …do you like best?句型透视 2必背句1.But my mother wants me to drink it.2.She says it’s good for my health 3.Forty-five percent exercise four to six times a week.4.She has a lot of good habits.例句解析1.But my mother wants me to drink it.但是我的妈妈想让我喝它。
Want=would like,其后可接名词，动词不定式等want to do sth.想要做某事Eg:I want to buy some apples.want sth. 想要某物Eg:He wants a good job.want sb. to do sth.想要某人做某事Eg:His wife wants him to buy a car.2.She says it’s good for my health 她说对我的健康有益1）be good for“对……有益” ，反义词组是 be bad for“对……有害” 2）be good to“对……友好” ，相当于 be friendly to/ be kind to,后面一般跟表示人或者人格化的名词Eg: She is kind/ friendly to us.(3) be good at“擅长，善于” ，后面接名词，代词，或动名词相当于 do well in3.Here are the results.这是结果Here are…表示 “这儿…… 有，这儿是……” 此句是一个倒装句，here 在这儿做表语其中 here 后 be 的单复数形式要根据 be 后面名词的单复数来确定。
Eg: Here is a letter for you.Eg: Here are some flowers for us.4. W e found that only fifteen percent of our students exercise every d。
