内容正文:
Unit 3 Be healthy, be happy单元复习清单及对应练习
一、重点短语
(一)健康生活相关
1. keep healthy/fit 保持健康
2. have a balanced diet 均衡饮食
3. eat junk food 吃垃圾食品
4. drink enough water 喝足够的水
5. get enough sleep 获得充足睡眠
6. go to bed early 早睡
7. stay up late 熬夜
8. do eye exercises 做眼保健操
9. take a walk 散步
10. play sports 做运动
(二)其他相关
1. in one's free time 在某人的空闲时间
2. be good for 对……有好处
3. be bad for 对……有害
4. instead of 代替;而不是
5. a lot of/lots of 许多
6. all kinds of 各种各样的
7. from now on 从现在开始
8. make a plan 制定计划
9. help sb. (to) do sth. 帮助某人做某事
10. give up 放弃
二、重点句型
1. It's important to have a healthy lifestyle.(拥有健康的生活方式很重要。)
2. We should eat more fruits and vegetables.(我们应该多吃水果和蔬菜。)
3. You'd better not eat too much junk food.(你最好不要吃太多垃圾食品。)
4. How about going for a walk after dinner?(晚饭后去散步怎么样?)
5. It's bad for your eyes to read in the sun.(在阳光下看书对你的眼睛有害。)
6. I often do sports in my free time so that I can keep fit.(我经常在空闲时间做运动,这样我就能保持健康。)
7. Staying up late is not a good habit.(熬夜不是一个好习惯。)
8. We need to drink enough water every day.(我们每天需要喝足够的水。)
9. Do you have any good ideas to keep healthy?(你有什么保持健康的好主意吗?)
10. If you want to be healthy, you should exercise regularly.(如果你想保持健康,你应该经常锻炼。)
三、语言点详解
(一)It作形式主语
1. “It + be + 形容词 + (for sb.) + to do sth.”结构,it作形式主语,真正的主语是后面的动词不定式短语“to do sth.”。例如:It's difficult for us to finish the work in two days.(对我们来说,在两天内完成这项工作很难。)
2. 类似的句型还有“It + be +名词短语 + (for sb.) + to do sth.”,如:It's a good idea for you to take a trip.(对你来说,去旅行是个好主意。)
(二)had better的用法
1. had better意为“最好”,没有人称和数的变化,后接动词原形,即had better do sth.,表示建议或劝告。例如:You had better wear warm clothes today.(你今天最好穿暖和的衣服。)
2. 其否定形式是had better not do sth.,如:We had better not play football in the street.(我们最好不要在街上踢足球。)
(三)How about...?的用法
1. How about...? 常用来提出建议、请求或询问情况,意为“……怎么样?”,后接名词、代词或动词 -ing形式。例如:How about this book?(这本书怎么样?)How about going shopping?(去购物怎么样?)
2. 与What about...?用法相似,可以互换。
(四)so that的用法
1. so that引导目的状语从句,意为“以便;为了”,从句中常含有can, could, may, might等情态动词。例如:I get up early so that I can catch the first bus.(我早起以便能赶上第一班公交车。)
2. so that还可引导结果状语从句,意为“结果;以致”,此时从句中一般没有情态动词。例如:He studied hard so that he passed the exam.(他努力学习,结果通过了考试。)
(五)动名词作主语
1. 动名词(动词 -ing形式)可以作句子的主语,谓语动词用单数形式。例如:Swimming is good for our health.(游泳对我们的健康有好处。)
2. 动名词作主语和动词不定式作主语有时可以互换,但在表示抽象的、一般性的行为时,常用动名词;表示具体的、一次性的行为时,常用动词不定式。例如:Reading books is my hobby.(读书是我的爱好。)To read this book is very interesting.(读这本书很有趣。)
(六)be good for与be bad for的用法
1. be good for意为“对……有好处”,其反义词组是be bad for,意为“对……有害”。例如:Doing exercise is good for your body.(做运动对你的身体有好处。)Eating too much sugar is bad for your teeth.(吃太多糖对你的牙齿有害。)
2. be good还有其他常见短语搭配,如be good at(擅长),be good with(与……相处得好)。
(七)help的用法
1. help sb. (to) do sth. 表示“帮助某人做某事”,其中to可以省略。例如:My mother often helps me (to) clean my room.(我妈妈经常帮我打扫房间。)
2. help sb. with sth. 意为“在某方面帮助某人”。例如:Can you help me with my English?(你能在英语方面帮助我吗?)
3. with the help of... 意为“在……的帮助下”。例如:With the help of my teacher, I improved my math.(在老师的帮助下,我提高了我的数学成绩。)
四、语法聚焦
(一)祈使句
1. 祈使句是用来表示请求、命令、建议、劝告等的句子,通常省略主语you。肯定祈使句以动词原形开头,例如:Open the door, please.(请打开门。)
2. 否定祈使句是在动词原形前加Don't,例如:Don't be late for school.(上学不要迟到。)
3. 以Let开头的祈使句,Let's表示“让我们(包括说话者和听话者双方)”,Let us表示“让我们(不包括听话者)”。其否定形式分别为Let's not... 和Don't let us... 。例如:Let's go to the park.(我们去公园吧。)Let's not waste time.(我们不要浪费时间。)Don't let us make the same mistake.(别让我们犯同样的错误。)
(二)情态动词should的用法
1. should是情态动词,意为“应该”,没有人称和数的变化,后接动词原形。常用于表示建议、责任或义务等。例如:We should study hard.(我们应该努力学习。)
2. 其否定形式是shouldn't,意为“不应该”。例如:You shouldn't smoke here.(你不应该在这里吸烟。)
3. 在表示提建议时,“should + 动词原形”与“had better + 动词原形”用法相近,但should语气更委婉。
五、练习题
(一)单项选择
1. It's necessary ______ us ______ eat a balanced diet.
A. for; to B. of; to C. for; / D. of; /
2. You'd better ______ computer games too much.
A. not play B. not to play C. don't play D. not playing
3. How about ______ some fruit?
A. buy B. to buy C. buying D. buys
4. Staying up late ______ your health.
A. is good for B. is bad for C. is good to D. is bad to
5. I get up early every day ______ I can catch the school bus.
A. so that B. in order to C. because D. when
(二)用所给词的适当形式填空
1. We should ______ (exercise) every day to keep healthy.
2. It's bad for you ______ (read) in the dark.
3. He often helps his mother ______ (do) housework.
4. ______ (run) is a good way to keep fit.
5. You'd better ______ (not stay) up late.
(三)根据汉语提示完成句子
1. 我们应该多吃蔬菜少吃肉。
We should eat ______ vegetables and ______ meat.
2. 你最好现在就回家。
You'd ______ ______ home now.
3. 每天做运动对我们有好处。
______ sports every day ______ good for us.
4. 为了保持健康,他每天都早起。
He gets up early every day ______ ______ he can keep healthy.
5. 不要在课堂上吃东西。
______ ______ in class.
(四)句型转换
1. You should drink some milk.(改为否定句)
You ______ drink ______ milk.
2. It's good for you to exercise every day.(改为同义句)
______ every day is good for you.
3. Let's go for a walk.(改为同义句)
______ ______ going for a walk?
4. He stays up late. It's bad for his health.(合并为一句)
Staying up late ______ ______ ______ his health.
5. Do eye exercises every day.(改为否定句)
______ ______ eye exercises every day.
(五)补全对话
A: Hi, Lucy. You look a little tired. 1. ______
B: I didn't sleep well last night.
A: I'm sorry to hear that. 2. ______
B: I had a headache.
A: That's too bad. 3. ______
B: Yes, I did. The doctor said I should drink more water and have a good rest.
A: 4. ______
B: Thank you. I will. 5. ______
A: I usually exercise to keep healthy.
(一)单项选择
1. A
2. A
3. C
4. B
5. A
(二)用所给词的适当形式填空
1. exercise
2. to read
3. (to) do
4. Running
5. not stay
(三)根据汉语提示完成句子
1. more; less
2. better go
3. Doing; is
4. so that
5. Don't eat
(四)句型转换
1. shouldn't; any
2. Exercising
3. How/What about
4. is bad for
5. Don't do
(五)补全对话
1. What's wrong with you?
2. What was the matter?
3. Did you go to see a doctor?
4. I hope you'll get better soon.
5. What do you usually do to keep healthy?
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