Unit 2 How often do you exercise 知识点解析 2024-2025学年人教版八年级英语上册

Unit 2 How often do you exercise
重点单词
1.exercise (v./n.) 练习，锻炼
例句：I exercise every day to keep fit.（我每天锻炼以保持健康。）
2. housework (n.) 家务活
例句：I often help my parents with housework.（我经常帮父母做家务。）
3. hardly (adv.) 几乎不
例句：I hardly ever watch TV during weekdays.（在工作日，我几乎不看电视。）
4. once/twice (adv.) 一次/两次
例句：I go to the gym once a week.（我每周去一次健身房。）
5. Internet (n.) 互联网
例句：I often use the Internet to study.（我经常用互联网来学习。）
6. swing dance (n.) 摇摆舞
例句：My grandma likes to dance swing dance.（我奶奶喜欢跳摇摆舞。）
7. free (adj.) 有空的，自由的
例句：I'm free this afternoon, so I can help you with your homework.（我今天下午有空，可以帮你做作业。）
8. camping (n.) 野营
例句：We plan to go camping next weekend.（我们计划下周末去野营。）
9. popular (adj.) 流行的，受欢迎的
例句：Basketball is the most popular sport in our school.（篮球是我们学校最受欢迎的运动。）
dentist (n.) 牙医
应用例句：I have to go to the dentist for a checkup.（我得去看牙医做检查。）
重点短语
1.help with housework 帮助做家务活
例句：Could you help me with the housework （你能帮我做家务吗？）
2. on weekends 在周末
例句：I usually do my homework on weekends.（我通常在周末做作业。）
3. how often 多久一次
例句：How often do you play football （你多久踢一次足球？）
4. once a week 每周一次
例句：I go to the library once a week.（我每周去一次图书馆。）
5. stay up late 熬夜
例句：Don't stay up late, it's bad for your health.（不要熬夜，对身体不好。）
6. be good for 对...有好处
例句：Exercising is good for your health.（锻炼对健康有好处。）
7. in one's free time 在某人的空闲时间
例句：I like to read books in my free time.（我喜欢在空闲时间读书。）
8. the most popular 最受欢迎的
例句：Soccer is the most popular sport in the world.（足球是世界上最受欢迎的运动。）
9. go to the movies 去看电影
例句：Let's go to the movies this weekend.（这周末我们去看电影吧。）
not...at all 一点儿也不
例句：I don't like coffee at all.（我一点儿也不喜欢咖啡。）
语法
在这个单元中，“How often” 是一个用于询问频率的特殊疑问词组，它通常引导一个特殊疑问句，用于询问某件事情发生的频率。在语法上，这个句型后面接的是一个助动词（如“do”, “does”, “did”）加动词原形（通常是行为动词），来询问主语进行某个动作或参与某个活动的频率。
语法结构例句：
1.How often + 助动词（do/does/did）+ 主语+ 动词原形 + 其他？
例句：
询问一般现在时的频率例句：
How often do you exercise 你多久锻炼一次？
How often does she go shopping 她多久去购物一次？
2. 询问一般过去时的频率（注意助动词的变化）例句：
How often did you visit your grandparents last year 你去年多久拜访一次你的祖父母？
How often did they go out to eat 他们多久出去吃一次饭？
3. 使用不同的时间状语来丰富句子例句：
How often do you have to take a test at school 你在学校多久要参加一次考试？
How often does he watch TV on weekends 他周末多久看一次电视？
4. 回答示例例句：
I exercise every day. 我每天都锻炼。
She goes shopping once a week. 她每周购物一次。
We visited our grandparents twice a month last year. 我们去年每月拜访祖父母两次。
重点句子解析
"How often do you exercise "
解析：这是一个询问频率的特殊疑问句，用来询问对方多久进行一次锻炼。
仿写：How often do you read books (你多久读一次书？)
"I exercise every day."
解析：这句话给出了锻炼的频率，即每天。
仿写：I eat breakfast every morning. (我每天早晨都吃早餐。)
"She never goes to the movies."
解析：这句话使用了否定词"never"来强调某人从不做某事，即她从不看电影。
仿写：He never forgets to take his umbrella. (他从不忘记带伞。)
"I usually watch TV twice a week."
解析：这句话提供了观看电视的具体频率，即每周两次。
仿写：We usually go swimming once a month. (我们通常每月游泳一次。)
"Exercise helps me keep fit."
解析：这句话解释了锻炼的益处，即帮助保持健康。
仿写：Reading helps me improve my vocabulary. (阅读帮助我扩大词汇量。)
综合仿写练习
假设我们要仿写一段对话，询问对方的生活习惯和频率：
对话1：
A: How often do you do sports, Bob
B: I do sports three times a week. Running and swimming are my favorites.
A: Really I exercise every day, but I only swim occasionally.
B: Exercise helps us both keep fit, doesn't it
A: Absolutely. I also try to read a book at least once a week. How about you
B: I'm a big fan of reading, too. I read at least two books every month.
对话2：
A: How often do you go to the cinema, Linda
B: I hardly ever go to the cinema. I'd rather stay home and watch TV series.
A: Oh, I watch TV series every night before bed. I can't imagine a day without it.
B: That's cool. But I find it more relaxing to listen to music. I listen to music every day.
A: Me too! Music helps me relax after a long day.