Unit 2 How often do you exercise?一、词汇与短语● 重点单词A部分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4. once adv. 一次；曾经5. twice adv.两次；两倍6. Internet n.（国际）互联网；因特网7. program n.节目8. full adj.忙的；满的；充满9. swing n.摆动；秋千 V. (使)摆动；摇摆10. maybe adv.大概；或许；可能11. least adv.最小；最少 adj. & pron.最小的；最少的B部分1. junk n.无用的东西;无价值的东西2. health n.健康;人的身体（或精神）状态3. result n.结果；后果4. percent n.百分之…5. online adj. & adp.（的）;联网（的）6. although conj.虽然；尽管；即使7. through prep.以；凭借；穿过8. such adj. &pron.这样的；那样的；类似的9. mind n.头脑；心智10. together adv.在一起；共同11. die v.消失；灭亡；死亡12. dentist n.牙科医生13. magazine n.杂志；期刊14. however adv.然而；不过15. almost adv.几乎；差不多16. none pron.没有一个；毫无17. point n.得分；点 v.指；指向● 重点短语A部分1. how often 多久一次2. help with housework 帮助做家务3. hardly ever几乎从不4. on weekends 在周末5. once a week 每周一次6. twice a month 每月两次7. be free 有空8. go to the movies 去看电影9. use the Internet 用互联网10. have dance and piano lessons上舞蹈课 和钢琴课11. swing dance 摇摆舞12. play tennis 打网球13. stay up late 熬夜；睡得很晚14. at least 至少；不少于；起码15. play sports 进行体育活动B部分1. junk food垃圾食品2. be good for 对…有好处3. go camping 去野营4. not … at all 一点儿也不5. go online 上网6. in ones free time 在某人的业余时间7. the best way to do sth. 做某事的最好方式8. such as例如；像 这样9. more than 多于10. less than 少于● 重点句子A部分1. --What do you usually do on weekends? --I often go to the movies."在周末你通常做什么？ ” “我经常去看电影。
2. --How often do you watch TV? --Twice a week.“你多久看一次电视？ ” “一周两次3. Whats your favorite program?=What program do you like best?你最喜欢的节目是什么？4. --Are you free next week? --Next week is quite full for me.“下周你有空吗？” “下周对我来说相当忙碌5. How come? 为什么？/怎么会？6. I have to play tennis with my friends. 我得和我的朋友们打网球7. They often help with housework. 他们经常帮忙做家务8. He never stays up late 他从不熬夜B部分1. --How often do you go to the movies? “你多久看一次电影？”--I go to the movies maybe once a month. “我也许一个月去看一次电影。
2. We all know that many students often go online, but we were surprised that ninety percent of them use the Internet every day. The other ten percent use it at least three or four times a week.我们都知道许多学生经常上网，但是让我们感到 惊讶的是，90%的学生每天都上网，而另外10%的学生一周至少上网三至四次1. The answers to our questions about watching tel evision were also interesting.对我们提出的关于看电视的问题的回答也十分有趣2. Although many students like to watch sports, game shows are the most popular.尽管许多学生喜欢看体育节目，但是游戏类节目是最受欢迎的3. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.通过上网或看游戏类节目来放松很不错,但是我们认为最好的放松方式是通过锻炼。
4. It is healthy for the mind and the body. 这有益于身心健康5. Old habits die hard. 旧习难改● 重点单词变形A部分1. one–once（副词）2. empty/hungry–full（反义词）3. swing–swung（过去式）4. little–less（比较级）–least（最高级）B部分1. healthy–health（名词）2. TV–television（完整形式）3. body–bodies（复数）4. die–dying（现在分词）–died（过去式）5. more–less/fewer（反义词6. write–writer（名词，指人）–wrote（过去式）二、语法知识点1、频度副词❶ 频度副词的含义：表示次数、频率的副词称为频度副词常用的频度副词按频率的高低依次为：always﹥usually﹥often﹥sometimes﹥seldom﹥hardly ever﹥never eg. John always comes late. 约翰总是迟到。
He hardly ever exercises. 他几乎从不锻炼❷ 表示具体的频率、次数时,一次用once,两次用twice,三次及以上用“基数词+ times”表示eg. I exercise once a week.我一周锻炼一次I visit my grandmother four times a year. 我一年去看望我（外）祖母四次❸ 频度副词的位置频度副词一般位于情态动词、助动词、连系动词之后，实义动词之前eg. He can never understand. 他永远也不会明白在情态动词之后）She is sometimes very busy. 她有时很忙在be动词之后）He sometimes goes there on business. 他有时到那里出差在实义动词之前）❹ 频度副词常与一般现在时连用，表示现在经常或反复发生的动作eg. He often goes to school by bike. 他经常骑自行车去上学❺ 对这些频度副词提问时，用how ofteneg. How often do you write to your elder brother? 你多久给你哥哥写一封信？2、help的用法help sb. (to) do sth.帮助某人做某事help sb. with sth.cant/couldnt help doing sth.情不自禁做某事cant help to do sth.不能帮助做某事help oneself （to sth.）随便吃/喝（某物）eg. Can you help me to learn English ? 你能帮助我学英语吗？=Can you help me with English ?Jim,help yourself to some cakes. 吉姆，请随便吃点蛋糕。
She cant help laughing. 她忍不住笑了起来Im sorry, I cant help to solve this problem. 对不起，这个问题我帮不上忙3、once twice等表次数的用法英语中的“一次”为once；“两次"为 twice；三次或三次以上"用“基数词+ times”, 如 three times 三次,many times 许多次 twice a week意为“一周两次"，表示频率，其中twice用作副词，意为“两次”这种频率的表示法：由“次数+时间段”构成，如 ：four times a day 一天四次，常用 how often 提问eg. --How often does your mother take the medicine? 你妈妈多久吃一次药？--Three times a day 一天三次● once还可意为"曾经；从前eg. That man once lived in Guangzhou. 那个人曾住在广州。
Once there was a tiger in the forest. 从前森林里有一只老虎● once的固定搭配：at once立刻，马上 once or twice 一两次 once again 再一次4、how often的用法由how often引导的特殊疑问句，其 结构为：How often + 一般疑问句？ how often 意为“多久一次”,用来询问动作发生的频率， 一般用 sometimes, never, once a week（—周一次）,every day（每天）,hardly ever（几乎从不） 等表示频率的副词或副词词组来回答eg. -- How often does he dance? 他多久跳一次舞？--Every day. 每天（都跳）● how many times意为"多少次"，用于询问次数可用once,twice,three times等进行回。