Unit 2 How often do you exercise Section A 2a-2d 学案 人教版八年级上册

Unit 2 How often do you exercise
Period 2 Section A (2a—2d)
【学习目标】
掌握下列重点词汇：once, twice, Internet, program, full, swing, swing dance, use the Internet, once/twice/ three times a week
掌握下列重点句型：
①— How often do you watch TV — I watch TV every day. /Twice a week．/ Hardly ever.
② How come
3. 语法：由how often引导的特殊疑问句
【重难点】
教学重点：学习表示频率的短语
2. 教学难点： 学会描述课余时间的活动安排。
（一）情境创设：
（二）目标导引：
独立预学展示
1.多久一次 2.一周三次 __________________
3.每月一次 4.使用电脑__________________
5.你下周有空吗？ 6.摇摆舞 ___________________
7.下周我很忙。 8.怎么会呢？___________________
9.他最好的朋友 10.上钢琴课 _________________
（三）合作探究
一、重点单词与短语
1. once “一次”；twice“两次”；three times“三次”；four times “四次”
【拓展】once 还可译为“曾经”；at once“ 立即；马上”；once again“再一次”；once in a while“偶尔地”。
【跟踪训练】
(1) 我每周上网一次。I use the _______________ _______________ a week.
(2) 他曾经住在美国。He _____________ _____________ in America.
2.【辨析】every day和everyday
every day = each day“每天”，副词短语，作状语。
everyday = daily “日常的”，形容词，只作定语。
【跟踪训练】用every day和everyday填空
(1) The Internet has become part of our ______________ life.
(2) He reads newspapers_______________.
3. full 作形容词，“忙的”，相当于busy，反义词是free。
【拓展】full “满的、充满的”，反义词是empty。 常见词组be full of “充满……”
full “饱的”， 反义词是hungry。
【跟踪训练】
(1) 这些天你忙吗？ ______________ you ____________ these days
(2) The bottle _____________ ______________ _____________ (装满了) milk.
(3) 现在我吃饱了。 I ____________ ____________ now.
4. swing 作名词，意为“摆动；秋千”；作动词，意为“（使）摆动；摇摆”。
【拓展】swing dance “摇摆舞”； belly dance“肚皮舞”； street dance“街舞”
【跟踪训练】
(1) 她正摇晃一瓶葡萄酒。 She ___________ ______________ a bottle of wine.
5.【辨析】sometimes, sometime, some times, some time
sometimes “有时”，频度副词，表示动作发生的不经常性，多用于现在或过去时态。在句子中位置较灵活。对它提问用How often
sometime “某时”，副词，表在过去或将来的某个时候，用于过去或将来时，对它提问用when
some times “几次（倍）”，名词短语，time 是可数名词，“次、倍”，对它提问用How many times
some time “一些时间、一段时间”，名词短语，指时间段。对它提问用How long
【跟踪训练】
(1) 我要离开一段时间。 I will be away for __________ ___________.
(2) 他去过上海几次了。 He has been to Shanghai ___________ ___________.
(3) 我有时上学迟到。 ___________ I am late for school.
(4) — When will you come back — ____________ later next month.
二、重点句型
1. How come 怎么会？
How come 意为“为什么？怎么会？”，表示感到某事很奇怪，有点想不通，可以单独使用，也可在其后接句子，用来询问事情的缘由的状况。
【辨析】how come, why
how come 意思相近，都可译为“为什么”。 引导的句子语序为陈述语序。
why 引导的特殊疑问句的语序为疑问语序。
【跟踪训练】
(1) 你为什么不喜欢她？ you don’t like her
= don’t you like her
(2) 你为什么吃得这么多？ you eat so much
= you eat so much
2. How often do you watch TV 你多久看一次电视？
【精讲】how long, how often, how soon 三者都可以译成“多久”。
how long 用来提问“多长时间”，对“一段时间的长短”提问时用，与延续性动词连用。
how often 用来提问某动作或状态发生的频率，对“一段时间内发生了几次活动”（always, usually, often, never 或twice a day等表示频率的词或短语）提问时用。
how soon 用来提问某人要“多快”能做好某事，或某事要“多快”能完成，对“过多少时间（就能…）”（in 短语）提问时用，常用于将来时态。
how far “多远”，对距离提问时用。
how many times 询问“多少次”，对次数once, twice, three times…提问时用.
【跟踪训练】
(1) 他父母多久让他看一次电影 ____________ __________ do his parents let him watch a movie
(2) 你在那儿待多久？ __________ ___________did you stay there？
(3) 她丈夫多久后会来？ __________ ___________will her husband come
(4) —__________ ___________ ___________ have you been to Japan —Only once.
（四）交流展示
1.2a Listen and number he activities.
2.2b Listen again and match the activities in 2a with how often Cheng Tao does them.
3.2c fill in the chart and make conversation.
4.2d Read the conversation in 2d and answer questions.
①. Is Claire free next week
② What kind of dance is she learning
③ When does she have piano lessons
5.Role-play the conversation
（五）积累巩固
一、单项选择
( ) 1. — does Tom go to the club — Once a week.
A. How often B. How soon C. How long D. How many
( ) 2. Most students in my class morning exercises every day.
A. does B. do C. is doing D. are doing
( ) 3. Summer holiday is coming. Li Lei with his father to go to Shanghai.
A. want B. will want C. wants D. is want
( ) 4. She to the movies twice a week.
A. go B. goes C. went D. going
( ) 5. My father once a day.
A. exercise B. exercising C. exercises D. exercised
( ) 6. I never go .
A. skate B. skating C. skates D. skated
( ) 7. — does your brother play football — Three times a week.
A. How often B. How long C. How many times D. How many
( ) 8. Most students exercise a week.
A. once or twice B. one time or two time
C. once time or twice D. once or two time
( ) 9. — How often do you go skateboarding — .
A. Two times B. Three hours C. Twice a week D. For two days
( ) 10. — My favorite is Sing My Song （《中国好歌曲》）.What about you
— I like Animal world best.
A. movie B. subject C. sport D. program
二、用所给单词的适当形式或汉语提示填空
1. She often (stay) up late.
2. I read English books (two) a week.
3. My sister often (do) her homework in the evening.
4. How often your friend (watch) TV
5. Here （be）your milk.
三、句型转换
1. Tom wants to learn swing dance. (对划线部分提问)
dance Tom want to learn
2. His brother uses the Internet four or five times a week. (对划线部分提问)
his brother the Internet
3. He is always late for class. (改为否定句) He is late for class.
4. We drink milk every day. (对划线部分提问) do you drink milk
5. I eat chocolate three times a day. (对划线部分提问)
do you eat chocolate a day
（六）延伸拓展
一、阅读理解
Here are four students’ habits. Let’s look at them.
David Linda Tina Jack
Exercising Twice a week Twice a week Never Every day
Drinking milk Never Twice a day Every morning Three times a day
Eating fruit and vegetables Twice a day Every day Once a week Every day
Eating junk food Once a week Twice a week Four times a week Never
Sleeping Seven hours a day Six hours a day Five hours a day Eight hours a day
( ) 1. From the form, we know ________ habits may be the best.
A. Tina’s B. David’s C. Jack’s D. Linda’s
( ) 2. What does Tina never do
A. She never exercises. B. She never drinks milk.
C. She never eats vegetables D. She never eats junk food.
( ) 3. How long does David sleep every day
A. For five hours B. For six hours
C. For seven hours D. For eight hours