人教版英语八年级上册全册教材全解人教版英语八年级上册 Unit 2 How often do you exercise 教材全解文档格式.docx

1、几次、几倍Ive been to the museum some times.sometime某时I will visit Daming sometime this summer vacation.some time一段时间She has lived here for some time.4. hardly ever （P. 9）hardly作副词，表示“几乎不”；hard用作副词表示“努力地、猛烈地”，作形容词表示“硬的、困难的”。He hardly works.He works hard.This is a hard work.5. How often do you watch TV?ho

2、w often意为“多久一次”用来提问频率，常用表示频率的副词或者短语来回答，如twice a week, sometimes, every day, always等。-How often do you play sports?-Three times a week.【拓展】辨析how long, how soon和how oftenhow long“多长时间”，提问for和since引出的时间状语-How long did you stay there?-For about two weeks.how soon “多久”提问“in+一段时间”-How soon will they come

3、back?-In two weeks.how often“多久一次”，提问动作发生的频率-How often do you go home?-Once a week.how far“多远”，提问距离的远近-How far is it from your home to school?-Three kilometres.6. use the Internet （P. 10）Internet作名词，表示“互联网、因特网”，常用的短语为：on the Internet“在互联网上”；surf the Internet“上网”。You can find much useful information

4、on the Internet.Most of the students like surfing the Internet.7. Hi, Claire, are you free next week? （P. 10）free作形容词表示“空闲的、有空的”，be free相当于have time。I will be free next week.=I will have time next time.【拓展】free作形容词，还可以表示“免费的、自由的”，be free to do sth.“自由地做某事”。The tickets are free.You are free to come a

5、nd go.8. How come?How come意为“为什么呢、怎么回事”，用于询问某事为什么会发生，可以单独使用也可以后接陈述句。How come you didnt wait for me for a while?9. Well, how about Tuesday?How about相当于what about意为“怎么样”，用来征求对方意见或者询问情况，后接名词或者动名词。Its sunny today. How/What about playing tennis?10. Oh, I have to play tennis with my friends. （P. 10）have t

6、o表示“不得不、必须”，强调客观需求；must侧重主观上自己认为有必要做某事。It is getting dark. I have to go home now.We must care for our parents.11. I go to the movies maybe once a month. （P. 11）maybe作副词，表示“可能、也许”，常常放在句首，可以与may be相互转换。Maybe he is a foreigner.=He may be a foreigner.12. How often do they stay up late? （P. 11）stay up意为“

7、熬夜”，表示“为熬夜”时，用“stay up for sth.”。It is a bad habit to stay up late.13. He plays at least twice a week. （P. 11）at least表示“至少”，反义词为at most“最多”。There are at least 10,000 students in our school.He can carry three boxes at most.Section B1. She says its good for my health. （P. 12）（1） be good for意为“对有益”，反义

8、词是be bad for“对有害”。Doing sports is good for you.（2） health是不可数名词，意为“健康”，in good health表示“很健康”，形容词为healthy，副词是healthily。To keep healthy, you should eat healthily.2. Last month we asked our students about their free time activities. （P. 13）ask sb. about sth.意为“询问某人某事”。Someone is asking Lucy about the w

9、onderful building.3. Here are the results. （P. 13）here和there置于句首，谓语动词是be动词或者come, go等不及物动词时，主语为名词时，用倒装结构，即主谓调换位置，若主语是代词时，主谓不倒装。Here comes the bus.There he goes.4. We found that only fifteen percent of our students exercise every day. （P. 13）percent表示“百分之”，常用“基数词+percent+of+名词”，“percent of+名词”作主语时，谓语

10、动词的单复数取决于名词的单复数。Seventy percent of the boys like playing computer games.Ninety of the work is finished.5. And twenty percent do not exercise at all!（P. 13）not.at all意为“一点儿也不、根本不”；not at all表示“没关系、不用谢”。I dont know about it at all.-Thank you very much.-Not at all.6. We all know that many students ofte

11、n go online.（P. 13）此处oneline用作副词，表示“在线、联网”，也可以用作形容词，意为“在线的、联网的”。Many people like buying things online.The online games are popular with children.7. The answers to our questions about watching television were also interesting. （P. 13）名词answer后常跟介词to，表示“的答案”，类似的名词还有key，solution，ticket。Your answer to t

12、he question is right.8. Although many students like to watch sports, game shows are the most popular. （P. 13）although用作连词，表示“虽然、即使”，相当于though，用来引导让步状语从句。在英语中，although/though和but不能同时出现。Although it rained heavily, the boys played outside.=It rained heavily, but the boys played outside.9. It is good to

13、 relax by using the Internet or watching game shows, but we think the best way to relax is through exercise. （P. 13）（1） by可以用来表示方式，意为“通过”，后接名词或者动名词短语。He usually goes to work by bus.The man makes a living by selling newspapers.（2） way表示“方法”时，后常接动词不定式或者of doing作定语。Can you think out a way to open the d

14、oor/of opening the door?10. Exercise such as playing sports is fun, and you can spend time with your friends and family as you play together. （P. 13） （1） such as一般用于列举同一类人或物中的一个例子，但必须数量少于前面所提及的总数，只能放在所列举的名词前；for example一般用于列举一个例子，后面经常加上一个句子，位置很灵活，可位于句首、句中，于被列举的事例之间用逗号隔开。I like fruit; for example, I

15、often eat bananas in the evening.He knows several languages, such as English and Chinese.（2） sb. spend+时间/金钱+on sth. “在某事上花费多长时间或者多少钱”； sb. spend+时间+（in） doing sth.“花费多长时间做某事”The man spent the whole day on his speech.The family spent 10,000 dollars on their trip.The boy has spent two hours playing t

16、he computer games.【拓展】辨析spend, pay, take和costspend主语是人spend.on sth./spend.（in） doing sth.paypay for sth./pay +金钱. for sth.take 主语是itIt takes sb.+时间+to do sth.cost主语是物sth. costs sb.+金钱11. Jane is a 16-year-old high school student in the United States. （P. 15） 16-year-old意为“16岁的”，其中的名词用单数形式，在句中作定语，16

17、years old表示“16岁”，在句中作表语。Li Bo is a seven-year old boy.=Li Bo is seven years old.12. However, she has some bad habits, too. （P. 15） （1） however作副词，表示“但是、然而”，常位于句首，后面常常跟有逗号隔开。The boy eats much every meal. However, he is very thin.（2） also, too, as well与either都可以表示“也”，但是用法不同。also放在句中行为动词前，be动词、助动词和情态动词

18、之后。He also wants to go.too用于肯定句中，放在句尾，前面用逗号隔开。He wants to go, either.as well用于肯定句中，放在句尾，前面不用逗号隔开。He wants to go as well.either用于否定句句末。He doesnt want to go either13. She says she is afraid. （P. 15） be afraid of意为“害怕、不敢”，后接名词、代词或者动名词。She is afraid of snakes.I was afraid of going through the woods.拓展1.

19、 be afraid to do sth. 意为“胆小不敢做某事”。He was afraid to go out at night.2. be afraid that.意为“担心、害怕”。He was afraid that he would lose.3. Im afraid表示“恐怕”。-Can we go there on time?-I am afraid not.14. None （P. 16） none表示“没有一个（人或物）”，是all“所有的人或物”的反义词，后常接介词of；另外，none强调某一类人或物数量的多少，常用来回答how many/much的提问；nobody（n

20、o one）/nothing强调个体，常用来回答what或者who的提问。None of us agreed to his plan.-How many students are there in the classroom?-None.-Who is knocking at the door?-No one.-Mum, I am a little hungry. Id like some bread.-Oh, there is none left in the bridge.【重点短语和句型归纳】1、重点短语1.help with housework帮助做家务 2.on weekends=o

21、n the weekend在周末 3.how often多久一次 4.hardly ever几乎从不5.once a week每周一次 6.be free =be available有空7.go to the movies去看电影 8.on the Internet在网上 9.swing dance摇摆舞 10.play tennis打网球 play+球类/棋类/中国乐器 play the +西洋乐器 11.stay up late熬夜；睡得很晚 12.at least至少 at most最多 13.have/take dance and piano lessons上舞蹈课和钢琴课 14.go

22、 to bed early早点睡觉 15. play sports=do sports进行体育活动 16. be good for对有好处 17.go camping去野营 18. notat all一点儿也不 19.in ones free time在某人的业余时间 20.the answers to the questions 问题的答案 21.such as比如；诸如 22.go to the dentist去看牙医 23.more than多于；超过 less than少于 2、重点句型1.help sb. with sth.帮助某人做某事 2.How about doing?=wha

23、t about doing .怎么样？3.want sb. to do sth.想让某人做某事 4.How many+可数名词复数+一般疑问句？ 有多少?5.主语+find+that从句. 发现 6.spend time with sb.和某人一起度过时光7.Its+ adj.+（for sb）+ to do sth. 对某人来说，做某事是的。 8. ask sb. about sth.向某人询问某事9.by doing sth. 通过做某事（回答how引导的疑问句） 10.Whats your favorite?你最喜爱的是什么？11.the best way to do sth.做某事的最

24、好方式 12.How come ?怎么回事？【语法讲解】频度副词一、频度副词的含义英语中常见的频度副词有usually, sometimes, always, often, seldom, never等，它们用来表示动作发生的频率，但是在程度上有所区别，频率由高到低依次是：alwaysusuallyoftensometimesseldomnever。频度副词放在be动词、情态动词和助动词之后，实义动词之前，对频率的提问用how often。Hes always busy.I never play a trick on others.Sometimes I go to school by bus.二、频度副词在句中的位置频度副词一般放在实义动词之前，be动词、情态动词和助动词之后。Lucy is sometimes busy.I can hardly say a word.They often have coffee at night.