Unit2 How often do you exercise?一、短语归纳help with housework帮助做家务on weekends在周末how often多久一次hardly ever几乎从不once a week每周一次twice a month每月两次every day每天be free有空go to the movies去看电影use the Internet用互联网swing dance摇摆舞play tennis打网球stay up late熬夜；睡得很晚at least至少have dance and piano lessons上舞蹈课和钢琴课go to bed early早点睡觉play sports进行体育活动be good for对……有好处go camping去野营not…at all一点儿也不…… in one’s free time在某人的业余时间fifteen percent of the students 百分之十五的学生the most popular最受欢迎的such as比如；诸如old habits die hard积习难改go to the dentist去看牙医morn than多于；超过less than少于help sb. with sth.帮助某人做某事How about…? ......怎么样？/ ……好不好？want sb. to do sth.想让某人做某事How many+可数名词复数+一般疑问句？……有多少……?主语+find+that从句. ……发现…… spend time with sb.和某人一起度过时光It’s+ adj.+ to do sth. 做某事的……的。
ask sb. about sth.向某人询问某事by doing sth. 通过做某事What’s your favorite……?你最喜爱的……是什么？the best way to do sth.做某事的最好方式二、语法讲解1. exercise （v/n）的用法1）（动）:锻炼. 如：He exercises every day.2) (可数名词)：“...操;练习”. 如：do morning/ eye exercises; do math exercises(不可数名词):“锻炼;运动”讲：如：We often do / take exercise on weekends.练习：1、The old man is very well because he often __________.A . drinks B. exercises C. sleeps D. plays2. ----How often do you usually go shopping?—Sometimes/Twice a week. 有时候/一周两次.1) go shopping 意为“去购物”。
Go+ v- ing : 表示进行某项活动。
如：Go swimming/ shopping/skating/skiing/fishing/climbing/hiking2)频率副词：always=all the time,usually, often, sometimes=at times,hardly ever, never它们用来表示动作发生的频率，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，在程度上有所区别，频率由高到低依次是：always > usually > sometimes > seldom > hadly ever > never100% 80% 60% 30% 10% 0%(1).sometimes: 有时候；sometime：某时；some times：许多次/倍; some time: 一段时间(2). hardly(adv): 几乎不hard 硬的；eg: The stone is hard.困难的；严厉的；勤奋的a hard writer努力地；猛烈地study/rain hard练习1、The ground is too to dig2、I can understand them.3、It's raining ,the people can go outside.4、—How was the weather yesterday?——It rained _______. People could ___________go out.A. hardly; hardB. hard hardC. hardly; hardlyD. hard hardly3）how often表示“多久一次”，是对动作的频率进行提问。
频率副词：always, usually, often, sometimes, hardly ever, neverhow often 次数＋时间段: 如：once or twice a weekevery ＋时间段: every day (每天) 区别：everyday（每天的；日常的）注意：表示“一次或两次”时，一般用once和twice表示。
如：once a month(一个月一次) 而表示“三次或以上”时，则用“数词＋times”结构。
如：five times a year (一年五次)4）由how构成的疑问词组的用法✧“多少”how many+ 可数名词复数如：how many programshow much+不可数名词如：how much coffee但how much=what’s the price of..? 还有“多少钱”的意思如：How much are those pants?✧how many times: “多少次”. 其答语表示次数。
如：once ,twice，three times等✧How old...? 询问年龄如：How old are you? I am five.✧how long多久(时间) 常用for two days，for three hours等回答。
多长（某物的长度）如：---How long is the river? --- 10 kms.✧how soon 用来询问过多久，多久以后，其答语是in two hours，in three days等。
如：How soon wil he come back？In an hour。
练习：1、--________ is it from your home to school? --Three miles.A. How farB. How muchC. How soonD. How long2、—______do they play basketball?—Every day.A．How soon B．How much C．How many D．How often3、－_____ do you do your homework? --- Every day.A.WhenB. How oftenC. How many timesD. What time4、I visit my grandparents _________a month.A. two timesB. second timeC. the second timeD. twice5、_______ milk do you drink?A. How manyB. How muchC. How oftenD. How soon6、He _________goes to the movies.A. sometimeB. some timeC. sometimesD. some times7、——How often do you dance? ——I dance __________ a week .A. once and twice timesB. two and three timesC. one or twoD. once or twice3. free 1) “空闲的”：Are you free tonight?2)be free “自由的”：a free country freedom(n)3)“免费的”：work for free.4.full 1) “满的；饱的”…be full of… : The bottle is full of water. 瓶子里装满了水。
2) “忙的”=busy He had a full life5.She says it’s good for my health. 她说那对我的健康有益。
(1）be good for：“对……有好处”。
如：Doing exercise is good for our health. （2）be good at：“擅长于……” 如：He is good at playing football.(3) be good to sb./sth: “对……好” 如：The old woman is good to us.(4) be good to do sth.: “适合；宜于” 如：The water is good to drink.(5) be good with: “与……相处好” 如：The teacher is good with his students. 练习：1、Eating fruit and vegetables _____________ our health.A. is good toB. is goodC. is good forD. is well for6．go online = use the Internet ：上网练习1、——What does Mary do on weekends?——She usually __________ the Internet at home .A, use B. go on C. uses D. goes on7. more than two hours=over two hours:超过8. keep healthy = stay healthy = keep in good health: 保持健康练习1、Miss Liu is very ________, because she exercises every day.A. healthB. healthyC. unhealthyD. unhealth9. ask的用法1）ask sb. to do : 叫…做某事Teacher asked me to clean the classroom. 2）Ask sb. not to do sth.: 叫…不要做某事Teacher asked me not to clean the classroom.3）ask sb. about sth. : 问某人某事We asked our students about their free time activities.4）ask sb. for sth. : 向某人要求… 如：ask teacher for help练习: Teacher asked me __________ (clean) the classroom.Teacher asked me __________ (not clean) the classroom.We asked our students ______ their free time activities.10. 1）help sb. with sth.如：They help me with this problem. 他们帮助你解决这个问题。