八年级英语unit1(改）

1、Unit 1 How often do you exercise? skateboarding surf the Internetdo choresexerciseplay soccerskateboarding surf the Internetdo choresexerciseplay soccer A: How often do you ?B: Sometimes/ always/ ofen/ hardly ever/ never Oral practiceHow often do you do these activities? Make conversations with your

2、 partner.do homeworkevery dayA: How often do you do your homework?B: Every day.exerciseThree/Four times a weekA: How often do you exercise?B: Three times a week.eat junk foodonce a monthA: How often do you eat junk food?B: Once a month.surf the Internettwice a weekA: How often do you surf the Intern

3、et?B: Once a week.1How often do you exercise？你多久锻炼一次？(1)how often 意为“多久一次”，常用于对动作发生的频率进行提问，答语一般是频率副词或表示频率的副词词组，如 once,often, never, three times a week, every day 等。如：How often does he go back to London?他多久回一次伦敦？Once a year.一年一次。(2)exercise 在本句中用作动词，意为“锻炼”。 如：You should exercise more.你应该多锻炼。(1)表示“一次”

4、用 once，“两次”用 twice，“三次”或“三次以上”用“基数词times”。如：three times 三次 some times 几次注意：time 作“次数”讲时是可数名词，作“时间”讲时是不可数名词。(2)exercise 还可用作名词。当作“锻炼；运动”讲时是不可数名词，作“练习；习题”讲时是可数名词。如：Walking is good exercise.(不可数)散步是很好的运动。We do English exercises every day.(可数)我们每天做英语练习。how often, how long, how far 与 how soon(1)how often

5、 用于对动作发生的频率进行提问。(2)how long 意为“多久”，用于提问某延续性动作持续时间的长短，常用“for一段时间”来回答；也可意为“多长”，用于提问某物的长度。如：How long did he sleep？他睡了多久？How long is the stick? 这根棍子有多长？(3)how far 意为“多远”，用于提问距离。如：How far is it from his house? 距离他家有多远？(4)how soon 意为“多久以后”，用于提问某个动作在多久的将来将会发生，其答语通常是“in一段时间”。如：How soon will he be back? 他要多久

6、才回来？In an hour.一小时以后。单项填空。_do you visit your parents?Twice a week.AHow longCHow soonBHow farDHow often答案：D题意：“你多久看望你父母一次？”“一周两次。”由答语可知询问的是频率，故用 how often。She goes shopping with her mother _ a month.Afour timeCfour timesBfourth timeDfourth times答案： C 题意：她一个月陪她母亲购四次物。time 作“次数”讲时是可数名词，表示“三次以上”应用“基数词ti

7、mes”，故选 C。单项填空。_ do they do on Saturdays?They always see a film.AHowBWhatCWhereDWhen答案：B 题意：“他们周六都做什么？”“他们总是看电影。”由答语可知是提问事物，故用 what。AonBinCfor D. to答案：A on weekendsat weekends 在周末。My sister usually plays the piano _ weekends._ for health and _ for knowledge arenecessary for us students.AExercise; ex

8、erciseCExercise; exercisesBExercises; exercises DExercises; exercise答案：C 题意：身体的运动和知识的练习对我们学生来说是必需的。前者指“运动”，不可数；后者指“练习”，可数。故选 C。完成句子，每空一词。exercise如果我们每天锻炼，我们会有一个健康的生活方式吗？Can we have a healthy lifestyle if we _ every day? 1. _does it take you to surf the internet? About two hours. A. How soon B. How o

9、ften C. How long D. How many 2. _do you go shopping ?Twice a month. A. How often B. How C. How long D. How many times 3. _ sheep are there on the farm?Two hundred.A. How much B. How many C. How often D. How long 4. _do you like the program Animal World?It is interesting. A. When B. How C. Where D. What 5. -_ are the vegetables? -Three Yuan a kilo（千克）. A. How much B. How many C. How often D. How longExercises:Ho