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人教版七年级下册英语Unit 3 Keep Fit单元知识梳理及练习
一、重点词汇
1. 健康与状态
fit /f t/ adj. 健康的；健壮的 v. 适合
healthy / helθi/ adj. 健康的
unhealthy / n helθi/ adj. 不健康的
sleepy / sli pi/ adj. 困倦的；瞌睡的
full /f l/ adj. 满的；饱的；充满的
2. 食物与饮食
fruit /fru t/ n. 水果
vegetable / ved t bl/ n. 蔬菜
meat /mi t/ n. 肉
fish /f / n. 鱼肉；鱼
egg /eg/ n. 鸡蛋
milk /m lk/ n. 牛奶
water / w t (r)/ n. 水
juice /d u s/ n. 果汁
hamburger / h mb ɡ (r)/ n. 汉堡包
candy / k ndi/ n. 糖果
chocolate / t kl t/ n. 巧克力
coffee / k fi/ n. 咖啡
cola / k l / n. 可乐
3. 运动与活动
exercise / eks sa z/ v. & n. 锻炼；运动
run /r n/ v. 跑步
swim /sw m/ v. 游泳
walk /w k/ v. 走路；散步
jog /d ɡ/ v. 慢跑
baseball / be sb l/ n. 棒球
match /m t / n. 比赛；竞赛
team /ti m/ n. 团队
progress / pr ɡres/ n. 进步
practice / pr kt s/ n. & v. 练习；训练
4. 频率与时间
always / lwe z/ adv. 总是
usually / ju u li/ adv. 通常
often / fn/ adv. 经常
sometimes / s mta mz/ adv. 有时
hardly / hɑ dli/ adv. 几乎不
never / nev (r)/ adv. 从不
once /w ns/ adv. 一次
twice /twa s/ adv. 两次
day /de / n. 一天；一日
week /wi k/ n. 星期；周
5. 日常行为
get up 起床
go to bed 上床睡觉
brush /br / v. 刷
wash /w / v. 洗
clean /kli n/ v. 打扫；清洁

二、重点短语及固定搭配
1. 健康核心
keep fit / keep healthy 保持健康
keep fit and healthy 保持身心健康
be fit for 适合……
be fit to do sth. 适合做某事
stay healthy 保持健康
drink plenty of water 喝大量的水
2. 饮食
have breakfast / lunch / dinner 吃早/午/晚饭
eat healthy food 吃健康食物
junk food 垃圾食品
be good for 对……有益
be bad for 对……有害
3. 运动锻炼
do exercise / take exercise 做运动
work out 锻炼；健身
play sports 做运动
go jogging 去慢跑
go swimming 去游泳
do sit-ups 做仰卧起坐
take part in 参加（活动/比赛）
practice doing sth. 练习做某事
build team spirit 培养团队精神
4. 作息习惯
get up early 早起
go to bed early 早睡
stay up late 熬夜
get enough sleep 获得充足睡眠
take a rest 休息一下
5. 卫生保健
brush one’s teeth 刷牙
wash one’s hands 洗手
have a cold 感冒
have a fever 发烧
take medicine 吃药
6. 频率表达
once a day / week / month 一天/一周/一月一次
twice a day / week 一天/一周两次
three times a week 一周三次
four times a month 一个月四次
hardly ever 几乎从不
every day 每天
7. 其他
full of energy 充满精力
make progress 取得进步
show one’s progress 展示某人的进步
at first / at the start 起初；开始
succeed in doing sth. 成功做某事
encourage sb. to do sth. 鼓励某人做某事
Practice makes perfect. 熟能生巧。

三、重点句型（课本原句+常考）
1. 谈论健康习惯
It's important to keep fit. 保持健康很重要。
We need to drink plenty of water every day. 我们每天需要喝大量水。
You should eat more vegetables. 你应该多吃蔬菜。
You shouldn’t eat too much junk food. 你不应该吃太多垃圾食品。
2. 询问频率（核心句型）
— How often do you exercise 你多久锻炼一次？
— I exercise three times a week. 我一周锻炼三次。
— How often does he / she go swimming 他/她多久游一次泳？
— He / She goes swimming once a week. 他/她一周游一次。
I sometimes play basketball on weekends. 我有时周末打篮球。
He never stays up late. 他从不熬夜。
3. 建议句型
You’d better (not) do sth. 你最好（不要）做某事You’d better go to bed early. 你最好早睡。
It's + 形容词 + to do sth. 做某事是……的It's good to exercise every day. 每天锻炼很好。
Why don't you ... 你为什么不……？Why don't you go for a walk 你为什么不去散散步？
4. 花费时间
spend time (in) doing sth. 花时间做某事I spend an hour exercising every day. 我每天花一小时锻炼。
spend time on sth. 在某事上花时间She spends much time on her homework.
5. 其他常考
Once a month is enough. 一个月一次就够了。
Eating too much is bad for you. 吃太多对你不好。
Getting up early is a good habit. 早起是个好习惯。

四、重要语法知识点
1. 频率副词（本单元核心语法）
顺序（从高到低）：
always (100%) → usually → often → sometimes → hardly ever → never (0%)
位置：
放在 be动词、情态动词、助动词之后
放在 实义动词之前
例句：
She is always happy.（be后）
He usually gets up early.（实义动词前）
They don’t often watch TV.（助动词后）
2. 频率提问：How often ...
How often + 一般疑问句？
回答：always / usually / ... / once a week / three times a day ...
3. 可数/不可数名词（食物类）
可数：apple, banana, egg, vegetable, hamburger复数：apples, bananas, eggs
不可数：milk, water, juice, meat, bread, rice不能加s，用 much / some / a lot of 修饰
4. It's + adj. + to do sth.
It 作形式主语，真正主语是 to do
It's important to keep fit.
It's good to drink water.
5. need to do sth. / need sth.
need to do 需要做某事（主动）We need to exercise more.
need + 名词 需要某物I need some water.
6. 一般现在时（第三人称单数）
主语 he / she / it / 单数名词，动词加 -s / -esHe exercises every day.
She drinks milk.
巩固练习
一、词汇过关：根据句意及首字母提示填单词（每空一词，每小题1分，共10分）
1. It’s very important to k______ fit and healthy every day.
2. Eating more vegetables and fruit is good for our h______.
3. Tom never eats junk food, so he is very h______.
4. I usually do some e______ in the morning to keep strong.
5. She goes swimming t______ a week, on Wednesday and Saturday.
6. Don’t stay up late, or you will feel s______ in class tomorrow.
7. We should drink plenty of w______ every day.
8. My brother likes to j______ in the park every morning.
9. How o______ do you play basketball with your friends
10. Getting enough s______ is good for our body and mind.
二、单项选择（每小题1分，共10分）
（ ）1. —How often do you take exercise
—______.
A. For an hour B. Twice a day C. At seven o’clock D. In the afternoon
（ ）2. Eating too much chocolate is bad ______ our teeth.
A. for B. to C. at D. with
（ ）3. It’s important ______ early every morning.
A. get up B. getting up C. to get up D. gets up
（ ）4. My sister ______ drinks cola, because she thinks it’s unhealthy.
A. always B. usually C. often D. hardly ever
（ ）5. We need ______ more healthy food to keep fit.
A. eat B. to eat C. eating D. eats
（ ）6. —______ does Tom go jogging
—Every morning.
A. How long B. How far C. How often D. How much
（ ）7. He spends half an hour ______ basketball every day.
A. play B. to play C. playing D. plays
（ ）8. You’d better ______ up late, it’s bad for your health.
A. not stay B. don’t stay C. not to stay D. stays
（ ）9. Vegetables and milk are ______ food.
A. healthy B. unhealthy C. bad D. well
（ ）10. I brush my ______ twice a day.
A. tooth B. tooths C. teeth D. teethes
三、句型转换（每小题2分，共10分）
1. I eat vegetables three times a day.（对划线部分提问）
______ ______ do you eat vegetables
2. She has some milk for breakfast.（改为否定句）
She ______ ______ ______ milk for breakfast.
3. It’s important to keep healthy.（改为同义句）
______ ______ is important.
4. He usually walks to school.（改为一般疑问句）
______ he usually ______ to school
5. Drinking too much cola is bad for us.（改为同义句）
______ bad for us ______ ______ too much cola.
四、补全对话（从方框中选择最佳选项完成对话，有两项多余，每小题1分，共5分）
A. What’s your favorite sport B. How often do you do sports C. Do you like eating junk food D. Why do you like doing sports E. What do you usually eat for dinner F. That’s very healthy. G. Do you get up early every day
A: Hi, Linda! You look very fit.
B: Thank you. I always keep healthy habits.
A: 1. ______
B: I do sports every day.
A: 2. ______
B: I like jogging best.
A: 3. ______
B: No, I never eat it. It’s unhealthy.
A: 4. ______
B: I usually eat vegetables and fish.
A: 5. ______
B: Thank you.
五、短文填空（从方框中选择合适的单词并用其适当形式填空，有两项多余，每小题1分，共15分）
healthy, fit, exercise, often, sleep, drink, vegetable, walk, junk, never, early, good
Keeping healthy is very important for everyone. To keep 1., we need many good habits.
First, we should eat 2. food. We can eat more 3.______ and fruit, and we shouldn’t eat too much 4.______ food like hamburgers and candies.
Second, we should 5.______ plenty of water every day. It is 6.______ for our body.
Third, we need to do some 7.______ every day. We can 8.______ in the park or play ball games with our classmates.
Fourth, we should get up 9.______ and go to bed early. Don’t stay up late, or we can’t get enough 10.______.
If we keep doing these, we will be happy and strong.

参考答案
一、词汇过关
1. keep
2. health
3. healthy
4. exercise
5. twice
6. sleepy
7. water
8. jog
9. often
10. sleep
二、单项选择
1. B
2. A
3. C
4. D
5. B
6. C
7. C
8. A
9. A
10. C
三、句型转换
1. How often
2. doesn’t have any
3. Keeping healthy
4. Does; walk
5. It’s; to drink
四、补全对话
1. B
2. A
3. C
4. E
5. F
五、短文填空
1. healthy
2. healthy
3. vegetables
4. junk
5. drink
6. good
7. exercise
8. walk
9. early
10. sleep

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