Unit 2 How often do you exercise?知识点讲义（含答案） -2024-2025学年人教版英语八年级上册

Unit 2 How often do you exercise
Section A 重点单词
1. housework n.家务劳动;家务事
2. hardly adv.几乎不;几乎没有
3. ever adv.在任何时候;从来;曾经
4. once adv.一次;曾经→one num.一
5. twice adv.两次;两倍→two num.二
6. Internet n.(国际)互联网;因特网
7. program n.(= programme)节目
8. full adj.忙的;满的;充满的
9. swing n.摆动;秋千v.(使)摆动;摇摆 → swung(过去式)
10. maybe adv.大概;或许;可能
11. least adv.最小;最少 adj.& pron.最小的; 最少的 →little adj.小的;少的n.一点儿→less adv.& adj.较少(的);较小(的)
Section A 重点短语
1. hardly ever 几乎从不
2. help with housework 帮忙做家务
3. once/ twice a week一周一次/两次
4. three times a month一个月三次
5. go shopping 去购物
6. use the Internet 上网
7. stay up late 熬夜到很晚
8. have piano lessons上钢琴课
9. at least 至少;不少于;起码
10. how often 多久一次
11. eat/ have a healthy breakfast吃一份健康的早餐
12. swing dance 摇摆舞
13. go to the movies去看电影
Section A 重点句子
1.—你周末通常做什么
—我总是锻炼。
— What do you usually do on weekends
—I always exercise.
2.—你去购物吗
一不，我从不去购物。
— Do you go shopping
— No,I never go shopping.
3.—你多久去看一次电影
—我大约一个月去看一次电影。
— How often do you go to the movies
—I go to the movies maybe once a month.
Section B 重点单词
1. junk n.无用的东西；无价值的东西
2. coffee n.咖啡
3. health n.健康;人的身体(或精神)状态 → healthy adj.健康的 → unhealthy adj.不健康的
4. result n.结果;后果
5. percent n.(= per cent) 百分之……
6. online adj.& adv.在线(的);联网(的)
7. television n.电视节目;电视机
8. although conj.虽然;尽管;即使
9. through prep.以;凭借;穿过
10. mind n.头脑;心智
11. body n.身体
12. such adj.& pron.这样的;那样的;类似的
13. together adv.在一起;共同
14. die v.消失;灭亡;死亡 → death n.死亡→ dead adj.死的 → dying adj.奄奄一息的
15. writer n.作者;作家→write v.写→wrote (过去式)
16. dentist n.牙科医生
17. magazine n.杂志;期刊
18. however adv.然而;不过
19. than prep.& conj.(用以引出比较的第二部分)比
20. almost adv.几乎;差不多
21. none pron.没有一个;毫无
22. less adv.较少;较小 adj.& pron.较少的; 更少的
23. point n.得分;点v.指;指向
Section B 重点短语
1. junk food 垃圾食品
2. be good for ... 对······有好处
3. go camping in the countryside 在乡下露营
4. free time activities 业余活动
5. fifteen percent of the students 百分之十五的学生
6. four to six times a week 一周四到六次
7. not … at all 根本不
8. go online 上网
9. such as例如;像……
10. die hard 难改掉
11. more/ less than 多 /少于
12. go to the dentist去看牙医
13. teeth cleaning洁牙
14. a few times a week一周几次
15. almost every day 几乎每天
16. for fun 为了娱乐
17. the answers to our questions 我们问题的答案
18. the best way to do sth.做某事最好的方法
Section B 重点句子
1.我的妈妈想要我喝牛奶。她说它对我的健康有益。
My mother wants me to drink milk. She says it's good for my health.
2.百分之二十的学生根本不锻炼。
Twenty percent of our students do not exercise at all.
3.我们感到吃惊的是，百分之九十的学生每天都使用网络。
We were surprised that ninety percent of the students use the Internet every day.
4.通过上网或观看游戏节目来放松固然很好，但我们认为锻炼是最好的放松方式。
It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.
5.像做运动这一类的锻炼方式是很有趣的，并且当你和你的朋友或家人一起运动时，你们可以共同度过一段时光。
Exercise such as playing sports is fun, and you can spend time with your friends and family as you play together.
6.记住“旧习难改”。所以不要等到来不及才开始锻炼。
Remember,“ Old habits die hard.” So start exercising before it's too late!
单 元 知 识 讲 解
1. hardly ever 几乎从不
【重点讲解】
hardly ever 意为“几乎从不”,其中ever 为副词，意为“在任何时间；从来；曾经”，此处起强调作用。
hardly 用作副词，意为“几乎不；几乎没有”，它本身具有否定意义，不能再与其他否定词连用。通常置于连系动词 be、情态动词 can等之后，实义动词之前，也可用来回答 how often 引起的特殊疑问句。如：
She hardly ever does housework.她几乎从不做家务活。
(2) 辨析: hard与 hardly
hard adj.坚硬的 This is a hard bed. 这是 一张硬床。
adj.困难的 = difficult It's hard to speak English well.说好英语很难。
adv.努力地 Mary works hard.玛丽工作努力。
hardly adv.几乎不 She hardly does sports.她几乎不运动。
【重点演练】选用 hard 与 hardly 填空。
(1) Lin Tao ____ goes to the movies.
(2) He always studies ____.
(3) This question is ____ for me to answer.
2. How often do you watch TV 你多久看一次电视
【重点讲解】
how often 意为“多久一次;多长时间一次”，用来提问频率，回答时一般用表示频率的词或短语,如: once/ twice a week, sometimes, every day, always, never 等。如:
— How often do you play sports 你多长时间进行一次体育运动
— Three times a week.一周三次。
【重点拓展】
(1) how many times 意为“多少次”,用于询问次数,可用 once, twice, three times 等进行回答。如：
— How many times do you exercise every week 你一周锻炼几次
— Four times.四次。
(2) 与how 相关的其他疑问词词组：
①how long意为“多长;多久”,用来询问时间的长短或物体的长度。
②how much 意为“多少(钱)”,用来询问物品的价格或不可数名词的数量。
③how many 意为“多少”,用来询问可数名词的数量。
④how far意为“多远”,用来询问距离,即路程的远近。
⑤how old意为“多大”,用于询问年龄。【重点演练】用与 how 相关的疑问词词组填空。
(1)—____ is the river
— It's 1,356 kilometers.
(2)—____ is the pen
— Ten yuan.
(3)—____ apples do you have
— Three.
(4)—____ does Mark watch TV
— Three times a week.
3. She says it's good for my health.她说它对我的健康有益。
【重点讲解】
(1)辨析: be good for, be good at, be good with 与 be good to
be good for 对……有好处 Doing morning exercises is good for you. 做晨练对你有好处。
be good at 擅长 I'm good at( playing)basketball. 我擅长(打)篮球。
be good with 与 相处得好He is good with children. 他和孩子们相处得好。
be good to=be friendly to 对……友好 She is always good to me. 她总是对我很好。
health 意为“健康;人的身体(或精神)状态”，是一个表示抽象意义的不可数名词,其形容词形式为 healthy。
health常用于短语 be / stay / keep in good health,意为“保持健康”,相当于 be / stay/ keep healthy。如:
We should eat more vegetables to keep healthy / in good health. 我们应该多吃蔬菜来保持健康。
【重点演练】
(1) Milk is good ____ your ____( healthy).
(2) My grandfather is ________(身体健康).
4. The answers to our questions about watching television were also interesting. 对于我们提出的有关看电视的问题的回答也颇有意思。
【重点讲解】
the answers to questions 为固定搭配,意为“问题的答案/回答”。名词 answer之后常接介词 to，表示“ 的答案/回答”。
【重点拓展】类似的短语还有：
the key to the door 门的钥匙
the solution to the problem 问题的解决方法
【重点演练】完成译句，每空一词(含缩写词)。这个问题没有简单的答案。
There is no easy ____ this____.
5. Although many students like to watch sports, game shows are the most popular.虽然许多学生喜欢观看体育节目，但游戏类节目却是最受欢迎的。
【重点讲解】
although 用作连词,意为“虽然;尽管;即使”，相当于 though，引导让步状语从句。注意：在英语中，当表示“虽然 ，但是 ”时, although/ though 不能和 but在同一个句子中使用。如：
She kept on working although she was tired. 她虽疲劳但仍继续工作。
【重点演练】改错。
Although it was raining, but the farmers were still working in the field.
6. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.通过上网或是看游戏节目来放松固然很好，但是我们认为锻炼是最好的放松方式。
【重点讲解】
(1) by在文中用作介词，意为“通过；靠”，此处表示方法、手段，其后可接名词、代Unit 2
词或动词- ing 形式。如:
He had to do all the work by hand.所有的工作他都得靠手工完成。
【重点拓展】与 by意思相近的词语还有 in和 with, with 表示“用 工具”, in 表示“用 方式/语言/语调/笔墨/颜色等”。
(2) the best way to do sth.表示“做某事的最佳方式”,相当于 the best way of doing sth.。如:
The best way to remember a new word is to use it often. 记住一个新单词最好的方式是经常使用它。
(3) through 意为“以;凭借”,在句中用作介词，表示“通过；凭借”。如：
He won the game through hard work. 他通过努力赢得了比赛。
【重点拓展】 through作介词, 还可表示“穿过”。其近义词有 over和 across,这三个词的具体区别如下：
①through 表示从某个空间内部“穿过；横过”。如：
They walked through the forest together.他们一起走路穿过了那片森林。
②over表示从某物的上方“越过”。如：
A bird flew over the river. 一只鸟儿从河上飞过。
③across 表示从某物的表面“横过；穿过”。如：
He walked across the road carefully. 他小心地走过马路。
【重点演练】用适当的介词填空。
(1) It is difficult for me to find the answer____ this question.
(2) He makes a living ____ selling books.
(3) I stepped ____a broken piece of wood.
(4) What's this ____ English
(5) Look left and right before you go ____ the street.
(6) He passed ____ the hall.
(7) He broke the window ____a stone.
重 点 语 法 小结
频度副词
1.频度副词的定义
(1)频度副词表示某一动作或状态出现的频率，通常和一般现在时连用。常用的频度副词有(按频率从高到低排列)： always(100%), usually, often, sometimes, hardly ever, never(0%)。
(2) 当表示具体的频率、次数时，一次用 once,两次用 twice,三次及三次以上用“基数词+ times”。如:
I go to the movies once / three times a month.我每个月去看一次 / 三次电影。
2.频度副词在句中的位置
频度副词通常放在情态动词、助动词或系动词 be 之后, 行为动词之前; sometimes可位于句首、句中或句尾。如：
Tom is never late for school. 汤姆上学从来不迟到。
Mom often watches TV in the evening.妈妈经常晚上看电视。
Sometimes I ride my bicycle to school.我有时骑自行车去上学。
3.对频度副词的提问
对频度副词或“次数+时间段”提问时要用 how often,意为“多久一次”。如:
— How often does he go to the park 他多久去一次公园
— Three times a week.一周三次。
【语法演练】根据句意，用恰当的频度副词填空。
(1)I can't swim, so I____ go to the river to swim.
(2) Alan likes writing to me, but ____ he calls me up.
(3) It ____ rains in the desert(沙漠). It's usually sunny and hot.
(4) My brother likes movies very much and he____ goes to the movies on weekends. But he sometimes goes to the movies on Fridays.