Unit 3 Be healthy, be happy单元重点易错专项训练 2026-2027学年沪外教版英语七年级上册

**基本信息** 聚焦Unit 3健康主题，9大考点81题分层训练，通过易错点提示与三级题型设计，系统构建情态动词、名词等语法知识网络，提升语言运用准确性与逻辑思维能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |情态动词|9题/should/must辨析|明确should后接原形、mustn't表禁止等核心用法|从基础选择到拓展填空，层层递进掌握情态动词语气差异| |名词辨析|9题/food/water不可数|强调不可数名词无复数、表数量用a cup of等规则|结合健康主题词汇，区分可数与不可数名词实际应用| |频度副词|9题/always/never位置|归纳be动词后、行为动词前等位置规律|通过语境辨析频度差异，培养语用逻辑| |词性转换|9题/health→healthy|梳理名词-形容词-副词转换规则|以健康相关词汇为载体，构建词形变化知识链|

沪外教版(2026)七年级上册 Unit 3 Be healthy, be happy 单元重点易错专项训练 沪外教版(2026)七年级上册 Unit 3 Be healthy, be happy 单元重点易错专项训练 紧扣最新教材(2026沪外教版) | 9大考点 | 81道精选题 姓名:_ 班级:_ 得分:_ 考点一:情态动词 should / shouldn't / must / mustn't 易错点:should后接动词原形(不是should to do) must表主观命令/规则;mustn't=禁止(≠ needn't不必) shouldn't = 不应该;语气比must委婉 否定回答Must...?用needn't/don't have to 基础题(选择题) ( )1. You _ eat too much junk food. It's bad for your health. A. should B. shouldn't C. must D. can ( )2. We _ wash our hands before meals. It's a good habit. A. shouldn't B. needn't C. must D. can't ( )3. — Must I finish the homework now? — No, you _. A. mustn't B. needn't C. can't D. shouldn't 提升题(选择题) ( )1. You _ play with fire. It's very dangerous. A. must B. should C. needn't D. mustn't ( )2. Lily has a headache. She _ go to bed early tonight. A. should B. shouldn't C. mustn't D. needn't ( )3. Chen Wu is tired. He _ stay up late to study. A. should B. must C. shouldn't D. has to 拓展题(用适当形式填空) 1. You _ (should) eat too many hamburgers. They're unhealthy. 2. We _ (must) keep the classroom clean every day. 3. _ (must) I take this medicine? — No, you needn't. 考点二:情态动词 can / can't / could(能力与许可) 易错点:can无人称变化(不说She cans) can后接动词原形(不是to do / doing) can't help doing = 不禁做某事(固定搭配) could是can的过去式;也可表更礼貌的请求 基础题(选择题) ( )1. Jam _ swim very well. He won first prize last year. A. cans B. can C. is can D. can to ( )2. Lily is so funny that we _ help laughing when we see her. A. can B. can't C. must D. should ( )3. — Can Chen Wu ride a bike? — Yes, he _. A. can B. is C. does D. could 提升题(选择题) ( )1. When I was young, I _ run very fast, but now I can't. A. can B. could C. cans D. will can ( )2. You _ smoke here. Look at the sign 'No Smoking'. A. can B. must C. can't D. needn't ( )3. _ you help me with my homework, please? A. Do B. Are C. Can D. Will can 拓展题(用适当形式填空) 1. She _ (can) dance when she was only five years old. 2. We _ (can) play football because of the heavy rain. 3. The funny cartoon made us _ (can) help laughing. 考点三:可数/不可数名词辨析(food/water/exercise等) 易错点:food/water/milk/energy/exercise不可数 不可数名词无复数、不与a/an连用 表数量用:a cup of / a piece of / some / much 基础题(选择题) ( )1. We should drink plenty of _ every day to stay healthy. A. waters B. water C. a water D. the water ( )2. Lily eats two _ for lunch every day. She loves them. A. carrot B. carrots C. carrotes D. a carrot ( )3. Doing enough _ is important for our health. A. exercise B. exercises C. an exercise D. exercising 提升题(选择题) ( )1. We need some _ for the salad. Let's buy some. A. cucumber B. cucumbers C. a cucumber D. an cucumber ( )2. Too much _ is bad for your teeth. Try to eat less. A. sugars B. sugar C. a sugar D. the sugar ( )3. She has a lot of _ and looks very energetic. A. energy B. energies C. an energy D. the energy 拓展题(用适当形式填空) 1. I'd like some _ (fruit) for dessert after dinner. 2. We need three _ (carrot) to make the soup. 3. There is too much _ (fat) in fried food like chips. 考点四:频度副词(always/usually/often/sometimes/rarely/never) 易错点:位置——be动词后/行为动词前/助动词与动词之间 rarely=很少(=seldom);never表否定 never在句首时,反意疑问句用肯定形式 sometimes可放句首/句中/句末 基础题(选择题) ( )1. Chen Wu is _ late for school. He is always on time. A. usually B. often C. sometimes D. never ( )2. Lily _ eats junk food because she wants to stay healthy. A. always B. usually C. rarely D. often ( )3. They _ go to the park at weekends. It's their habit. A. sometime B. sometimes C. some time D. some times 提升题(选择题) ( )1. Jam _ does exercise, so he is not very strong. A. always B. usually C. often D. rarely ( )2. My sister is a good student and she _ helps others. A. never B. seldom C. always D. hardly ( )3. _ have I eaten hamburgers — maybe only once a month. A. Always B. Often C. Sometimes D. Rarely 拓展题(用适当形式填空) 1. Lily _ (usual) gets eight hours of sleep every night. 2. They _ (rare) eat at fast food restaurants. 3. Jam _ (not often) drink cola because it has too much sugar. 考点五:重点短语 be good for / be bad for / instead of / give up 易错点:be good for + n./doing(对……有益) instead of + n./doing(代替/而不是) give up + doing(放弃做某事) take care of = look after(照顾) 基础题(选择题) ( )1. Eating more vegetables is good _ your health. A. at B. for C. with D. to ( )2. Jam drinks water _ cola. He wants to be healthier. A. instead B. instead of C. in place D. take place of ( )3. You should give _ eating too much fried food. A. in B. on C. up D. out 提升题(选择题) ( )1. Staying up late is bad _ your eyes and your brain. A. at B. for C. with D. to ( )2. Lily decided to give _ sweets to keep fit. A. eat B. to eat C. eating D. ate ( )3. We should take good care _ our bodies and stay active. A. at B. for C. with D. of 拓展题(用适当形式填空) 1. Walking to school is good _ (you) health. 2. Chen Wu gave _ (play) computer games late at night. 3. Instead _ (watch) TV, she reads a book every evening. 考点六:It's + adj. + to do / It's important to... / How about...? 易错点:It作形式主语,真正主语是后面的to do It's important/necessary/difficult to do sth How about + doing = What about + doing for sb to do中的sb用宾格(for me/for him) 基础题(选择题) ( )1. _ is important to drink enough water every day. A. This B. That C. It D. He ( )2. How about _ for a walk after dinner with us? A. go B. to go C. going D. goes ( )3. It's necessary _ hands before meals. A. wash B. to wash C. washing D. washes 提升题(选择题) ( )1. It's difficult _ me to finish the work in two days. A. of B. for C. to D. with ( )2. _ about going cycling in the country park this weekend? A. What B. How C. Why D. When ( )3. It's not easy _ a healthy habit and keep it. A. make B. to make C. making D. made 拓展题(用适当形式填空) 1. It's important _ (have) a balanced diet every day. 2. How about _ (go) swimming with us this afternoon? 3. It's good for you _ (do) exercise every morning. 考点七:when / because 引导的状语从句 易错点:when+从句(当……时);because+从句(因为……) 有because无so,有so无because(不同时用) when引导时间状语从句,主从句时态一致 because of + n./doing(不是because of + 句子) 基础题(选择题) ( )1. _ I'm tired, I still go for a walk every evening. A. Because B. So C. When D. Although ( )2. Lily stayed at home _ she had a bad cold. A. because B. so C. when D. but ( )3. We walk to school every day _ the weather is fine. A. because B. when C. so D. if 提升题(选择题) ( )1. He felt sleepy in class _ he stayed up late last night. A. because B. so C. when D. but ( )2. _ it was raining, we stayed at home and read books. A. Because B. So C. When D. A or C ( )3. She is full of energy _ she eats healthy food every day. A. so B. because C. when D. but 拓展题(用适当形式填空) 1. _ (when) I'm free, I often listen to music. 2. He was late for school _ (because) he missed the bus. 3. She couldn't go to school _ (because) of her illness. 考点八:have a + 疾病 / take care of / keep fit / catch a cold 易错点:have a fever/cough/headache/sore throat catch a cold = 感冒(非have a cold含义略不同) keep fit = 保持健康 = stay healthy take care of = look after(照顾/爱护) 基础题(选择题) ( )1. Lily has a _. She should see a doctor. A. headache B. head C. heads D. head aches ( )2. We should take good care _ our teeth. A. at B. for C. with D. of ( )3. Jam cycles to school every day to _ fit. A. stay B. keep C. make D. A or B 提升题(选择题) ( )1. Chen Wu didn't wear a coat and he _ a cold yesterday. A. had B. took C. caught D. A or C ( )2. She has a sore throat and _ a lot these days. A. coughs B. cough C. is cough D. coughing ( )3. To keep healthy, we must _ enough sleep every night. A. take B. get C. make D. A or B 拓展题(用适当形式填空) 1. Lily _ (have) a fever yesterday and stayed in bed. 2. We should take good care of _ (we) bodies. 3. Jam _ (catch) a bad cold last week. 考点九:词性转换 health/healthy/healthily & energy/energetic 易错点:health(n.) healthy(adj.) healthily(adv.) energy(n.) energetic(adj.) energetically(adv.) habit(n.) habitual(adj.);active(adj.) activity(n.) illness(n.) ill(adj.);disease(n.) 基础题(选择题) ( )1. We should eat _ food to stay in good _. A. health; healthy B. healthy; health C. healthily; health D. healthy; healthily ( )2. Jam is a(n) _ boy. He is full of _. A. energy; energetic B. energetic; energy C. energetic; energetic D. energy; energy ( )3. Lily exercises _ every morning. She is very _. A. health; healthy B. healthy; healthily C. healthily; healthy D. healthy; healthy 提升题(选择题) ( )1. Good _ habits help us live a _ life. A. eat; health B. eating; healthy C. eats; healthily D. eating; health ( )2. The flu is a common _. We should protect _. A. ill; us B. illness; us C. disease; ourselves D. B or C ( )3. She is _ in all school activities and very _. A. active; energetic B. actively; energy C. activity; energetic D. active; energy 拓展题(用适当形式填空) 1. Eating too much sugar is bad for your _ (healthy). 2. Lily is _ (energy) and always ready to help others. 3. We should brush our teeth _ (regular) to keep them healthy. 参考答案与详细解析 考点一:情态动词 should / shouldn't / must / mustn't 【基础题】 1. B shouldn't eat=不应该吃。垃圾食品有害健康。 2. C must wash=必须洗手(表义务/规则)。 3. B Must...?否定回答用needn't或don't have to(不必)。 【提升题】 1. D mustn't=禁止。玩火危险 禁止玩火。 2. A should go=应该早睡(建议)。头疼需要休息。 3. C shouldn't stay up=不应该熬夜(建议)。累了不该熬夜。 【拓展题】 1. shouldn't shouldn't eat=不应该吃太多汉堡。 2. must must keep=必须保持教室干净。 3. Must Must I...? 回答用needn't。句首大写。 考点二:情态动词 can / can't / could(能力与许可) 【基础题】 1. B can无人称变化(不说cans)。Jam能游泳。 2. B can't help doing=不禁做某事。Lily太有趣 不禁笑。 3. A Can...?肯定回答Yes, he can.能力提问。 【提升题】 1. B could是can的过去式。小时候能跑很快。 2. C can't=不能/不允许。禁止吸烟标志。 3. C Can you help...?请求帮助(can表许可/请求)。 【拓展题】 1. could when she was five 过去时;can could。 2. can't because of rain 不能踢球。can't play。 3.can't 考点三:可数/不可数名词辨析 【基础题】 1. B water不可数 无复数不加a。drink water。 2. B two carrots 可数复数(有two)。carrot carrots。 3. A exercise(锻炼)不可数 无复数。doing exercise。 【提升题】 1. B some cucumbers 可数复数。需要一些黄瓜。 2. B sugar(糖)不可数 无复数。too much sugar。 3. A energy(精力)不可数 无复数。a lot of energy。 【拓展题】 1. fruit fruit泛指水果时不可数。some fruit。 2. carrots three carrots 可数复数。 3. fat fat(脂肪)不可数 无复数。too much fat。 考点四:频度副词 【基础题】 1. D never=从不。他总是准时 从不迟到。 2. C rarely=很少。想保持健康 很少吃垃圾食品。 3. B sometimes=有时。at weekends 有时去公园。 【提升题】 1. D rarely=很少。不常锻炼 不强壮。 2. C always=总是。好学生 总是帮助别人。 3. D Rarely=很少。放句首大写。几乎不吃汉堡。 【拓展题】 1. usually usual(adj.) usually(adv.)修饰gets。 2. rarely rare(adj.) rarely(adv.)修饰eat。 3. doesn't often not often doesn't often drink。 考点五:重点短语 be good for / instead of / give up 【基础题】 1. B be good for=对……有益。多吃蔬菜对健康有益。 2. B instead of + n.=代替。喝水代替可乐。 3. C give up + doing=放弃做某事。give up eating。 【提升题】 1. B be bad for=对……有害。熬夜对眼睛和大脑有害。 2. C give up + doing。give up eating sweets。 3. D take care of=照顾。take good care of our bodies。 【拓展题】 1. for be good for your health。for表对象。 2. up playing give up playing=放弃玩电脑游戏。 3. of watching instead of + doing。of watching TV。 考点六:It's + adj. + to do / How about...? 【基础题】 1. C It作形式主语。It is important to do。 2. C How about + doing。about是介词 going。 3. B It's necessary to do。to wash hands。 【提升题】 1. B It's difficult for sb to do。for me。 2. B How about + doing。How about going cycling。 3. B It's not easy to do。to make a habit。 【拓展题】 1. to have It's important to have a balanced diet。 2. going How about going swimming。about+doing。 3. to do It's good for you to do exercise。 考点七:when / because 引导的状语从句 【基础题】 1. D Although=虽然。虽然累但仍散步(让步)。 2. A because=因为。感冒了所以待在家。 3. B when=当……时。当天气好时走路去学校。 【提升题】 1. A because=因为。熬夜所以上课困。 2. D Because(因为下雨)或When(当下雨时)均可。 3. B because=因为。吃健康食物所以精力充沛。 【拓展题】 1. When When I'm free=当我有空时。 2. because because he missed the bus(句子)。 3. because because of + n.。because of her illness。 考点八:have a + 疾病 / take care of / keep fit / catch a cold 【基础题】 1. A have a headache=头痛。冠词a不能省。 2. D take care of=照顾。take good care of our teeth。 3. D keep fit=stay fit=保持健康。A或B均可。 【提升题】 1. D have a cold / catch a cold均可。A或C。 2. A coughs(三单加s)。has a sore throat and coughs。 3. D get enough sleep / take enough sleep均可。A或B。 【拓展题】 1. had yesterday 过去时。have had a fever。 2. our take care of our bodies。we our(物主代词)。 3. caught last week 过去时。catch caught a cold。 考点九:词性转换 health/healthy/healthily & energy/energetic 【基础题】 1. B healthy food(adj.修饰名词);in good health(n.)。 2. B energetic boy(adj.);full of energy(n.)。 3. C exercises healthily(adv.修饰动词);is healthy(adj.)。 【提升题】 1. B eating habits(动名词修饰名词);live a healthy life。 2. D disease/illness均可;protect ourselves(反身代词)。 3. A active in activities(adj.);very energetic(adj.)。 【拓展题】 1. health your health(n.)。吃糖多对健康有害。 2. energetic is energetic(adj.作表语)。 3. regularly brush...regularly(adv.修饰动词brush)。 — — 学科网(北京)股份有限公司 $