Unit 2 Staying healthy单元知识总结及重点易错（专项训练）-2026-2027学年北师大版（三起）英语五年级上册

**基本信息** 聚焦健康主题，以10个重点易错考点为核心，通过基础-提升-拓展三级分层训练，系统提炼语法规则与解题技巧，构建从单词短语到综合运用的知识逻辑链，助力语言能力与思维品质提升。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |10个重点考点|每个考点9题（3基础+3提升+3拓展）|涵盖should/shouldn't用法、频度副词位置、名词语法等核心规则，结合语境辨析与错误修正技巧|从基础规则识记到语境应用（如不同城市生活习惯），再到综合语法辨析，形成"规则-应用-整合"递进逻辑|

最新北师大版（三起）五年级上册 Unit 2 Staying healthy 单元知识总结及重点易错专项训练 ■ ■ ■ ■ ■ ■ ■ 说明：本练习紧扣最新教材精选 10 个重点易错考点，每个考点含基础题×3、提升题×3、拓展题×3，共 90 题。 ★ 重点单词 healthy（健康的）, health（健康）, exercise（锻炼）, often（经常）, usually（通常）, always（总是）, sometimes（有时）, never（从不）, vegetable（蔬菜）, fruit（水果）, milk（牛奶）, water（水）, sleep（睡觉）, brush（刷）, wash（洗）, habit（习惯）, body（身体）, tooth/teeth（牙齿）, candy（糖果）, rest（休息） ★ 重点短语 stay healthy（保持健康）, eat vegetables/fruit（吃蔬菜/水果）, drink milk/water（喝牛奶/水）, get enough sleep（充足睡眠）, brush teeth（刷牙）, wash hands（洗手）, do exercise（做运动）, keep clean（保持清洁）, too much（太多，接不可数）, be good for（对…有益）, be bad for（对…有害）, have good habits（有好习惯） ★ 重点句型 How can we stay healthy? — We should eat more vegetables. Do you often exercise? — Yes, I do. / No, I don't. She always brushes her teeth before bed. It's important to have good habits. Don't eat too much candy. You shouldn't drink too much cola. Olivia usually gets eight hours of sleep. We need to wash our hands before meals. ★ 重点语法 ① should/shouldn't + 动词原形（健康建议） ② 频度副词：always > usually > often > sometimes > never 及位置 ③ 可数/不可数名词区分（vegetables可数 / milk不可数） ④ too much + 不可数；too many + 可数复数 ⑤ a lot of / lots of 既可修饰可数也可修饰不可数 ⑥ 一般现在时三单：brushes / washes / exercises ⑦ 祈使句：Don't eat... / Let's... / Please... ⑧ be good for / be bad for + 名词/doing ⑨ 情态动词 can + 动词原形（表能力） ⑩ 动词不定式 to do 作主语/表语：It's important to... 考点一：should / shouldn't + 动词原形（健康建议） ① should 后接动词原形，不接 to do 或 -ing。 基础题：（选择题） ◇（ ）1. We ____ eat more vegetables to stay healthy. A. should B. shouldn't C. are ◇（ ）2. You ____ eat too much candy. It's bad for teeth. A. should B. shouldn't C. do ◇（ ）3. Olivia ____ brush her teeth every day. A. should B. shouldn't C. is 提升题：（选择题） ▷（ ）1. Chen Wei exercises every day, so he ____ very strong. A. should B. shouldn't C. is ▷（ ）2. Which is WRONG? A. You should drink milk. B. She should to eat fruit. C. They should exercise. ▷（ ）3. Lily has a cold, so she ____ go to school today. A. should B. shouldn't C. is 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), doctors say kids ____ eat more sea fish. A. should B. shouldn't C. are ★（ ）2. The rule: after 'should/shouldn't', the verb must be in ____. A. original form B. -s form C. -ing form ★（ ）3. 'You should to exercise more.' is wrong. Correct: 'You ____ exercise more.' A. should B. should to C. ought 考点二：频度副词 always > usually > often > sometimes > never 排序与位置 ② 频度副词表示动作发生的频率，位置在be动词/助动词后，实义动词前。 基础题：（选择题） ◇（ ）1. Olivia ____ eats breakfast. She never skips it. A. never B. always C. sometimes ◇（ ）2. Jam ____ exercises, so he is not very strong. A. always B. usually C. never ◇（ ）3. They ____ go to school by bus. It happens every day. A. sometimes B. always C. never 提升题：（选择题） ▷（ ）1. Which order is RIGHT from highest to lowest frequency? A. never→sometimes→often→usually→always B. always→usually→often→sometimes→never C. often→always→sometimes→never→usually ▷（ ）2. Chen Wei is ____ late for school. He is a good student. A. always B. usually C. never ▷（ ）3. Bella ____ eats fast food because it's unhealthy. A. always B. usually C. never 拓展题：（选择题） ★（ ）1. In ____ (Wuhan), people ____ drink hot soup in winter. A. always B. never C. sometimes ★（ ）2. 'He sometimes is late.' is WRONG. Correct: 'He ____ late sometimes.' A. is B. are C. be ★（ ）3. Rule: with be动词, adverb comes ____; with 实义动词, adverb comes ____. A. before; after B. after; before C. after; after 考点三：可数/不可数名词区分（vegetables可数 / milk不可数） ③ 可数名词有复数形式，不可数名词无复数，提问用How much。 基础题：（选择题） ◇（ ）1. How ____ milk do you drink every day? A. many B. much C. more ◇（ ）2. I eat three ____ every day. They are good for me. A. vegetable B. vegetables C. vegetablees ◇（ ）3. We don't need very ____ water today. A. many B. much C. few 提升题：（选择题） ▷（ ）1. Olivia drinks ____ milk and eats ____ apples every day. A. much; many B. many; much C. much; much ▷（ ）2. They have ____ enough teeth to eat the meat. A. many B. much C. few ▷（ ）3. In ____ (Kunming), there is ____ rain in spring. A. many B. much C. few 拓展题：（选择题） ★（ ）1. The rule: ____ with uncountable (milk/water); ____ with countable (vegetables/teeth). A. Much; many B. Many; much C. Few; little ★（ ）2. Which is WRONG? A. much money B. many moneys C. many toys ★（ ）3. 'How many water?' is wrong. Correct: 'How ____ water?' A. many B. much C. more 考点四：too much + 不可数；too many + 可数复数 ④ too much 接不可数名词（too much candy）；too many 接可数复数（too many sweets）。 基础题：（选择题） ◇（ ）1. Don't eat too ____ candy. It's bad for your teeth. A. many B. much C. more ◇（ ）2. He drinks too ____ cola every day. A. many B. much C. few ◇（ ）3. There are too ____ people in the shop. A. much B. many C. more 提升题：（选择题） ▷（ ）1. Bella eats too ____ chocolates. She has a stomachache. A. much B. many C. few ▷（ ）2. Chen Wei puts too ____ sugar in his tea. A. many B. much C. more ▷（ ）3. There is too ____ noise in the classroom. A. many B. much C. more 拓展题：（选择题） ★（ ）1. In ____ (Xiamen), summer is hot, so people drink too ____ cold drinks. A. much B. many C. more ★（ ）2. Rule: 'too much' + ____ noun; 'too many' + ____ noun. A. countable; uncountable B. uncountable; countable C. many; much ★（ ）3. Transform: 'She eats too many rice.' → Correct: 'She eats too ____ rice.' A. many B. much C. few 考点五：a lot of / lots of 修饰可数与不可数 ⑤ a lot of = lots of，既可修饰可数名词复数，也可修饰不可数名词。 基础题：（选择题） ◇（ ）1. We have ____ vegetables for dinner. A. a lot B. a lot of C. many of ◇（ ）2. She drinks ____ milk every morning. A. a lot B. a lot of C. much of ◇（ ）3. They have ____ fruit in the fridge. A. a lot B. a lot of C. many of 提升题：（选择题） ▷（ ）1. Chen Wei has ____ books in his room. A. a lot B. a lot of C. lot of ▷（ ）2. Which is WRONG? A. lots of water B. a lot of money C. a lot friends ▷（ ）3. Olivia eats ____ apples and drinks ____ juice. A. a lot of; a lot of B. a lot; a lot of C. many; much 拓展题：（选择题） ★（ ）1. In ____ (Jinan), people eat ____ noodles and drink ____ tea. A. a lot of; a lot of B. a lot; a lot C. many; many ★（ ）2. 'A lot of' = '____' in meaning. A. few B. lots of C. a few ★（ ）3. 'She has a lot of friends.' → 'She has ____ friends.' (same meaning) A. lots of B. a lot C. much 考点六：一般现在时三单 brushes / washes / exercises ⑥ 主语是he/she/Olivia等第三人称单数时，动词加-s/-es：brush→brushes, wash→washes, exercise→exercises。 基础题：（选择题） ◇（ ）1. Olivia ____ her teeth every morning. A. brush B. brushes C. brushing ◇（ ）2. Jam ____ his hands before meals. A. wash B. washes C. washing ◇（ ）3. She ____ every day to stay healthy. A. exercise B. exercises C. exercising 提升题：（选择题） ▷（ ）1. Chen Wei ____ eight hours every night. A. sleep B. sleeps C. sleeping ▷（ ）2. Bella ____ her face with cold water. A. wash B. washes C. washing ▷（ ）3. The doctor ____ his hands carefully. A. wash B. washes C. washing 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), Zhang Hao ____ at 6:00 every morning. A. get up B. gets up C. getting up ★（ ）2. The rule: verb ending in ch/sh/s/x/o adds ____ for 3rd person. A. -s B. -es C. -ies ★（ ）3. 'She brush her teeth' is wrong. Correct: 'She ____ her teeth.' A. brush B. brushes C. brushing 考点七：祈使句 Don't eat... / Let's... / Please... ⑦ 祈使句以动词原形开头表示命令/请求/建议；否定形式Don't + 动词原形。 基础题：（选择题） ◇（ ）1. ____ eat too much candy. It's bad for your teeth. A. Do B. Don't C. Not ◇（ ）2. ____ brush your teeth before bed. A. Do B. Don't C. Not ◇（ ）3. ____ go to school together! A. Let's B. Let C. Don't 提升题：（选择题） ▷（ ）1. 'Please ____ your hands before meals.' Which fits? A. wash B. washes C. washing ▷（ ）2. '____ late for school!' said the teacher. A. Don't be B. Not be C. Be not ▷（ ）3. Which is a correct imperative? A. She eats vegetables. B. Eat more fruit! C. He exercises daily. 拓展题：（选择题） ★（ ）1. In ____ (Wuhan), Mom says: '____ drink cold water after exercise!' A. Do B. Don't C. Not ★（ ）2. The structure of negative imperative: ____ + verb base form. A. Don't B. Not C. No ★（ ）3. 'Let's ____ some exercise together.' A. do B. does C. doing 考点八：be good for / be bad for 固定搭配 ⑧ be good for + 名词/doing 对…有益；be bad for + 名词/doing 对…有害。 基础题：（选择题） ◇（ ）1. Eating vegetables is ____ your health. A. good for B. bad for C. good at ◇（ ）2. Too much candy is ____ your teeth. A. good for B. bad for C. good at ◇（ ）3. Exercise is ____ our bodies. A. bad for B. good at C. good for 提升题：（选择题） ▷（ ）1. Drinking milk is ____ ____ growing children. A. good at B. good for C. bad for ▷（ ）2. Watching too much TV is ____ ____ your eyes. A. good for B. bad at C. bad for ▷（ ）3. 'She is good ____ English.' means she does well in it. A. for B. at C. with 拓展题：（选择题） ★（ ）1. In ____ (Xiamen), sea food is ____ ____ people's health. A. good for B. bad for C. good at ★（ ）2. 'Reading is good ____ your mind.' Fill in the blank. A. at B. for C. with ★（ ）3. 'Too much sugar is bad ____ your body.' Fill in the blank. A. at B. for C. with 考点九：情态动词 can + 动词原形（表能力） ⑨ can 表能力或许可，后接动词原形；否定 can't；疑问 Can you...? 基础题：（选择题） ◇（ ）1. ____ you swim? — Yes, I can. A. Do B. Can C. Are ◇（ ）2. Bella ____ run very fast. She is good at running. A. can B. cans C. can to ◇（ ）3. They ____ jump high in the long jump. A. can B. cans C. can to 提升题：（选择题） ▷（ ）1. — Can Olivia lift the heavy box? — No, she ____. A. can B. can't C. don't ▷（ ）2. We ____ see clearly in the dark. It's too dark. A. can B. can't C. don't ▷（ ）3. ____ I use your pen? — Sure, here you are. A. Do B. Am C. Can 拓展题：（选择题） ★（ ）1. In ____ (Kunming), even little kids ____ climb trees with help. A. can B. should C. are ★（ ）2. The negative of 'can' is ____, followed by a ____ verb. A. can not; base B. cannot; -s C. can't; -ing ★（ ）3. 'She can to dance' is wrong. Correct: 'She ____ dance.' A. can B. can to C. cans 考点十：综合辨析——健康习惯全流程 ⑩ 综合运用：should/频度副词/可数不可数/too much/too many/a lot of/三单/祈使句/can。 基础题：（选择题） ◇（ ）1. — How can we stay healthy? — We ____ eat more fruit. A. should B. shouldn't C. do ◇（ ）2. She ____ exercises, so she is very fit. A. never B. always C. doesn't ◇（ ）3. ____ eat too much junk food. It's unhealthy. A. Do B. Don't C. Not 提升题：（选择题） ▷（ ）1. Chen Wei has a good habit. He ____ brushes his teeth and ____ eats vegetables. A. always; always B. never; never C. always; never ▷（ ）2. 'She ____ (have) enough sleep and she ____ (be) healthy.' Fill in. A. have; is B. has; is C. has; are ▷（ ）3. Which sentence is WRONG? A. We should exercise daily. B. He can swims fast. C. Don't eat too much. 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), Zhou Kai says: 'Kids ____ drink milk, ____ eat vegetables, and ____ exercise every day to stay healthy.' A. should; should; should B. should; shouldn't; should C. shouldn't; should; should ★（ ）2. Identify the only CORRECT sentence. A. She brushes her teeth every day. B. She brush her teeth every day. C. She brushes her tooth every day. ★（ ）3. 'It's important ____ have good habits.' Fill in the blank. A. to B. for C. at 参考答案与详细解析 考点一：should / shouldn't + 动词原形（健康建议） 基础题答案与解析： ◇（ ）1. 答案：A 解析：should后接动词原形eat。 ◇（ ）2. 答案：B 解析：吃太多糖果对牙齿有害，用shouldn't。 ◇（ ）3. 答案：A 解析：每天刷牙是好习惯，用should。 提升题答案与解析： ▷（ ）1. 答案：C 解析：前半句说每天锻炼，所以他是强壮的，用is。 ▷（ ）2. 答案：B 解析：should后接动词原形，不能加to。 ▷（ ）3. 答案：B 解析：感冒了今天不应该去上学，用shouldn't。 拓展题答案与解析： ★（ ）1. 答案：A 解析：医生通常建议孩子多吃海鱼，用should。 ★（ ）2. 答案：A 解析：should/shouldn't后接动词原形。 ★（ ）3. 答案：A 解析：should后直接加动词原形，不加to。 考点二：频度副词 always > usually > often > sometimes > never 排序与位置 基础题答案与解析： ◇（ ）1. 答案：B 解析：从不跳过=总是吃，用always。 ◇（ ）2. 答案：C 解析：不强壮说明从不锻炼，用never。 ◇（ ）3. 答案：B 解析：每天发生用always。 提升题答案与解析： ▷（ ）1. 答案：B 解析：频率从高到低：always > usually > often > sometimes > never。 ▷（ ）2. 答案：C 解析：好学生从不迟到，用never。be动词后。 ▷（ ）3. 答案：C 解析：不健康所以从不吃，用never。实义动词前。 拓展题答案与解析： ★（ ）1. 答案：A 解析：武汉冬天冷，人们总是喝热汤，用always。 ★（ ）2. 答案：A 解析：频度副词在be动词后，应为He is sometimes late. ★（ ）3. 答案：B 解析：be后/助后；实义动词前。 考点三：可数/不可数名词区分（vegetables可数 / milk不可数） 基础题答案与解析： ◇（ ）1. 答案：B 解析：milk不可数，用How much提问。 ◇（ ）2. 答案：B 解析：three后接可数复数vegetables。 ◇（ ）3. 答案：B 解析：water不可数，用much修饰。 提升题答案与解析： ▷（ ）1. 答案：A 解析：milk不可数用much；apples可数复数用many。 ▷（ ）2. 答案：A 解析：teeth可数复数用many。 ▷（ ）3. 答案：B 解析：rain不可数用much。 拓展题答案与解析： ★（ ）1. 答案：A 解析：Much接不可数；Many接可数复数。 ★（ ）2. 答案：B 解析：money不可数无复数，many moneys错误。 ★（ ）3. 答案：B 解析：water不可数，用How much提问。 考点四：too much + 不可数；too many + 可数复数 基础题答案与解析： ◇（ ）1. 答案：B 解析：candy不可数，用too much。 ◇（ ）2. 答案：B 解析：cola不可数，用too much。 ◇（ ）3. 答案：B 解析：people可数（复数概念），用too many。 提升题答案与解析： ▷（ ）1. 答案：B 解析：chocolates可数复数，用too many。 ▷（ ）2. 答案：B 解析：sugar不可数，用too much。 ▷（ ）3. 答案：B 解析：noise不可数，用too much。 拓展题答案与解析： ★（ ）1. 答案：B 解析：drinks此处为可数复数（各种饮料），用too many。 ★（ ）2. 答案：B 解析：too much+不可数；too many+可数复数。 ★（ ）3. 答案：B 解析：rice不可数，用too much。 考点五：a lot of / lots of 修饰可数与不可数 基础题答案与解析： ◇（ ）1. 答案：B 解析：a lot of + 可数复数vegetables。 ◇（ ）2. 答案：B 解析：a lot of + 不可数milk。 ◇（ ）3. 答案：B 解析：a lot of + 不可数fruit。 提升题答案与解析： ▷（ ）1. 答案：B 解析：a lot of + 可数复数books。 ▷（ ）2. 答案：C 解析：a lot不能直接加名词，应为a lot of friends。 ▷（ ）3. 答案：A 解析：a lot of既可接可数也可接不可数。 拓展题答案与解析： ★（ ）1. 答案：A 解析：noodles可数复数，tea不可数，都用a lot of。 ★（ ）2. 答案：B 解析：a lot of = lots of，意思相同。 ★（ ）3. 答案：A 解析：a lot of = lots of。 考点六：一般现在时三单 brushes / washes / exercises 基础题答案与解析： ◇（ ）1. 答案：B 解析：Olivia三单，brush以sh结尾加es。 ◇（ ）2. 答案：B 解析：Jam三单，wash以sh结尾加es。 ◇（ ）3. 答案：B 解析：She三单，exercise以e结尾加s。 提升题答案与解析： ▷（ ）1. 答案：B 解析：Chen Wei三单，sleep加s。 ▷（ ）2. 答案：B 解析：Bella三单，wash加es。 ▷（ ）3. 答案：B 解析：doctor三单，wash加es。 拓展题答案与解析： ★（ ）1. 答案：B 解析：Zhang Hao三单，get以t结尾加s。 ★（ ）2. 答案：B 解析：ch/sh/s/x/o结尾加-es。 ★（ ）3. 答案：B 解析：She三单，brush变为brushes。 考点七：祈使句 Don't eat... / Let's... / Please... 基础题答案与解析： ◇（ ）1. 答案：B 解析：否定祈使句Don't + 动词原形。 ◇（ ）2. 答案：A 解析：肯定祈使句以动词原形开头。 ◇（ ）3. 答案：A 解析：Let's + 动词原形，表示提议。 提升题答案与解析： ▷（ ）1. 答案：A 解析：Please后接动词原形wash。 ▷（ ）2. 答案：A 解析：Don't be + adj. 否定祈使句。 ▷（ ）3. 答案：B 解析：祈使句以动词原形开头，B正确。 拓展题答案与解析： ★（ ）1. 答案：B 解析：运动后不要喝冷水，Don't + 动词原形。 ★（ ）2. 答案：A 解析：否定祈使句结构：Don't + 动词原形。 ★（ ）3. 答案：A 解析：Let's后接动词原形do。 考点八：be good for / be bad for 固定搭配 基础题答案与解析： ◇（ ）1. 答案：A 解析：吃蔬菜对健康有益，用be good for。 ◇（ ）2. 答案：B 解析：太多糖果对牙齿有害，用be bad for。 ◇（ ）3. 答案：C 解析：运动对身体有益，用be good for。 提升题答案与解析： ▷（ ）1. 答案：B 解析：喝牛奶对成长中的孩子有益。 ▷（ ）2. 答案：C 解析：看太多电视对眼睛有害。 ▷（ ）3. 答案：B 解析：be good at + 名词/doing 擅长…。 拓展题答案与解析： ★（ ）1. 答案：A 解析：海鲜对健康有益，用be good for。 ★（ ）2. 答案：B 解析：be good for 对…有益。 ★（ ）3. 答案：B 解析：be bad for 对…有害。 考点九：情态动词 can + 动词原形（表能力） 基础题答案与解析： ◇（ ）1. 答案：B 解析：回答用can，问句用Can开头。 ◇（ ）2. 答案：A 解析：can后接动词原形run，无cans形式。 ◇（ ）3. 答案：A 解析：can后接动词原形jump。 提升题答案与解析： ▷（ ）1. 答案：B 解析：Can引导的疑问句，否定回答用can't。 ▷（ ）2. 答案：B 解析：太暗了看不见，用can't。 ▷（ ）3. 答案：C 解析：请求许可用Can I...? 拓展题答案与解析： ★（ ）1. 答案：A 解析：表能力，用can。 ★（ ）2. 答案：A 解析：can not = can't，后接动词原形。 ★（ ）3. 答案：A 解析：can后直接加动词原形，不加to。 考点十：综合辨析——健康习惯全流程 基础题答案与解析： ◇（ ）1. 答案：A 解析：问如何保持健康，答应该多吃水果。 ◇（ ）2. 答案：B 解析：非常健康说明总是锻炼，用always。 ◇（ ）3. 答案：B 解析：否定祈使句Don't + 动词原形。 提升题答案与解析： ▷（ ）1. 答案：A 解析：好习惯=总是刷牙+总是吃蔬菜。 ▷（ ）2. 答案：B 解析：She三单，have→has；she is healthy。 ▷（ ）3. 答案：B 解析：can后接动词原形swim，不能加s。 拓展题答案与解析： ★（ ）1. 答案：A 解析：医生建议：应该喝牛奶、吃蔬菜、每天锻炼。 ★（ ）2. 答案：A 解析：She三单brushes；tooth复数teeth。 ★（ ）3. 答案：A 解析：It's important to do sth. 不定式作真正主语。 学科网（北京）股份有限公司 $