专题2.2 SectionB-八年级英语人教版（上册）.doc

Unit 2 How often do you exercise?2. 2 Section B1. She says it’s good for my health. 她说它（牛奶）对我的健康有好处1）be good for意为＂对……有益＂，后可跟名词、代词或动名词其反义短语be bad for意为＂对……有害＂☞ Eating vegetables is good for your health. 吃蔬菜对你的健康有益易混辨析】 be good for，be good at，be good with与be good tobe good for意为＂对……有益＂Doing morning exercise is good for you. 做早操对你有益处be good at意为＂擅长＂，后接名词、代词或动名词I’m good at playing basketball. 我擅长打篮球be good with意为＂善于应对……＂He is good with children. 他管理孩子有一套be good to意为＂对……友好＂She is always good to me. 她总是对我很友好。

2）health不可数名词，意为＂健康＂，常用于短语be/stay/keep in good health，意为＂保持健康＂，相当于be/stay/keep healthy☞ Fresh air and exercise are good for our health. 新鲜空气和运动对我们的健康有益知识拓展】health的形容词形式是healthy，意为＂健康的＂；healthy的副词形式healthily，意为＂健康地＂☞ To keep healthy, you should eat healthily. 为了保持健康，你应该吃得健康Smoking will ____________ your health.A. be good for B. good at C. be bad for D. bad at【答案】C 2. Although many students like to watch sports, game shows are the most popular. 尽管很多学生喜欢看运动类节目，但游戏类节目是最受欢迎的although用作连词，意为＂虽然；尽管＂，相当于though，用来引导让步状语从句。

☞ Although my grandpa is old, he looks very strong and healthy. 虽然我的爷爷老了，但他看上去很健壮☞ Although it rained, the boys still played outside. 尽管下雨了，但是那些男孩仍在外面玩耍It rained, but the boys still played outside. 注意：在英语的表达习惯中，当表示＂虽然……，但是……＂时，although/though不和but在同一个句子中使用（即二者只能取其一）但可以和yet连用☞ Although he was tired, he didn’t stop to have a rest.＝He was tired, but he didn’t stop to have a rest. 尽管他累了，但他没有停下来去休息 the man is rich, ____________ he is not happy.A. Although；but B. Although；/ C. But；although D. Although；so【答案】B【解析】句意：虽然这个人很富有，但是他不开心。

although 虽然，尽管，引导让步状语从句，但是不能和but连用，因为它们都是连词，故排除A和C；根据句意可知选B3. Exercise such as playing sports is fun, and you can spend time with your friends and family as you play together. 比如进行体育活动这样的锻炼是有趣的，当你们一起运动时你可以和朋友、家人一起度过时光1）such as意为＂例如；像……一样＂，多用来列举同类人或事物中的几个☞ There are many big cities in China, such as Beijing and Shanghai. 中国有许多大城市，比如北京和上海2）spend及物动词，在此意为＂度过＂，还可表示＂花费（时间、金钱等）＂☞ Come and spend the weekend with us. 来和我们一起过周末吧易混辨析】 spend花费（时间、金钱等）主语是人常用结构为spend...on sth和spend...doing sthcost价格为；需支付主语多为物常用句型为Sth cost(s) sb some money.take花费（时间）it作形式主语，真正的主语是后面的不定式常用句型为It takes/took sb some time to do sth.pay支付（钱）主语是人常用结构为pay... for sth1. He bought a lot of fruit, ____________ apples and oranges.A. such as B. for example C. so as D. same as【答案】A2. I spend two hours ____________ reading English every day.A. on B. to C. for D. in【答案】D【解析】句意：我每天花两个小时阅读英语。

spend的主语是人，常用的句型结构是sb spend some time/money in doing sth4. However, she has some bad habits, too. 然而，她也有一些坏习惯however此处用作副词，意为＂然而；不过＂，可位于句首、句中或句末注意：一般情况下，当however位于句首时，其后加逗号；位于句末时，其前加逗号；位于句中时，其前后都加逗号☞ She was ill. However, she still went to work. 她病了，然而她依然去上班易混辨析】however＂然而；不过＂，作副词不能直接连接两个分句，须另起一新句，用逗号隔开，表示一种补充关系but＂但是＂，作连词可连接前后两个分句，表示一种转折关系We arrived at Disneyland last Sunday, ____________, we couldn’t get in.A. and B. because C. however D. so【答案】C5. Less than six. 不到6个（小时）。

less than意为＂不到；少于＂，其反义短语为more than，意为＂多于；超过＂，其中less用作副词，意为＂较少＂☞ He sleeps less than seven hours every night. 他每晚的睡眠时间不到7个小时☞ We live here for less than two years. 我们在这儿住了不到两年知识拓展】less还可用作形容词，意为＂较少的；更少的＂，修饰不可数名词☞ There is less water in this river. 这条河里的水更少—Why do you make friends with Joe?—He isn’t a good student, but ____________ he is honest.A. almost B. at least C. less than D. more than【答案】B【解析】句意：——你为什么和乔交朋友？ ——他虽然不是一个好学生，但是至少他诚实A. almost几乎，差不多；B. at least至少；C. less than低于，少于；D. more than超过，多于。

从语境可以推测＂至少他是诚实的＂故选B6. percent n. 百分之……（1）percent单复数同形与数词连用时，数词应置于percent之前twenty percent 百分之二十（2）percent of后接名词作主语时，of后的名词如果为不可数名词或单数可数名词，谓语动词用单数形式；若为可数名词复数形式，则谓语动词用复数形式☞ 65 percent of the children play computer games. 百分之六十五的孩子玩电脑游戏Sixty percent of the water in the lake ____________ clean and clear now.A. are　 B. is　C. was　 D. were【答案】B7. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise. 通过使用网络或观看游戏类节目放松是好的，但我们认为通过锻炼的方式放松是最好的。

1）本句是由but连接的并列复合句前一个分句中，It是形式主语，真正的主语是动词不定式短语to relax by using the Internet or watching game shows该句型结构为It is＋adj.（＋for sb.） to do sth.☞ It is easy for me to play ping-pong. 打乒乓球对我来说是容易的It is important ____________ people ____________ good manners. A. for；to learn　　　　 B. of；to learn C. for；learn D. of；learn【答案】A【解析】本题用固定句型法考查固定句型：It＋be＋形容词＋for sb.＋to do sth.意为＂做某事对某人来说是……的＂（2）by为介词，意为＂通过；靠＂，此处表示方法、手段，后接名词、代词或动词的-ing形式☞ He has to do all the work by hand. 所有的工作他都要靠手工完成。

☞ You can practice soccer by joining a sports club. 你可以通过加入一个运动俱乐部来练习足球知识拓展】（1）by。