Unit 3 Stay fit and healthy单元知识总结及重点易错（专项训练）-2026-2027学年辽师大版（三起）四年级上册

**基本信息** 聚焦健康主题，以“词汇-短语-句型-语法”逻辑链构建知识体系，通过10个易错考点的基础-提升-拓展三级训练（90题），系统提炼频度副词使用、should建议句型等解题方法，提升语言应用与思维辨析能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |单词/短语/句型|3类单词+20短语+10句型|分类记忆法（运动/食物/频度词）|从核心词汇到功能句型，构建主题表达基础| |语法汇总|6大语法点|频度副词排序（always→never）、too much/many名词搭配规则|语法规则与健康语境结合，强化应用理解| |十大考点训练|每考点9题（基础/提升/拓展）|情景分析法（如健康建议用should）、错误排除法（如three time→times）|从单一语法点到综合情景对话，层层递进培养语言能力与思维品质|

辽师大版（三起）四年级上册 Unit 3 Stay fit and healthy · 考点精练 辽师大版（三起）四年级上册 Unit 3 Stay fit and 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 第一部分 重点单词汇总 【运动与锻炼类动词】 单词 中文 单词 中文 exercise 锻炼；练习 jog 慢跑 run 跑步 swim 游泳 play 玩；打（球） sport 运动 walk 走路；散步 ride 骑（自行车） healthy 健康的 fit 强健的；健康的 strong 强壮的 brush 刷 【食物与营养类名词】 单词 中文 单词 中文 vegetable 蔬菜 fruit 水果 meat 肉 fish 鱼 milk 牛奶 egg 蛋 bread 面包 rice 米饭 candy 糖果 snack 零食 tooth 牙齿 teeth 牙齿（复数） water 水 food 食物 【频度副词 · 情态动词 · 其他】 单词 中文 单词 中文 always 总是 usually 通常 often 经常 sometimes 有时 never 从不 should 应该 shouldn't 不应该 must 必须 early 早 late 晚的；迟的 important 重要的 necessary 必要的 breakfast 早餐 lunch 午餐 dinner 晚餐 time 次；时间 第二部分 重点短语汇总 共收录本单元核心短语 20 个，建议熟记并灵活运用。 短语 中文 短语 中文 stay fit 保持健康 keep healthy 保持健康 do exercise 做运动 play sports 做运动 go jogging 去慢跑 go swimming 去游泳 eat healthy food 吃健康食物 eat vegetables 吃蔬菜 eat fruit 吃水果 drink milk 喝牛奶 brush teeth 刷牙 wash hands 洗手 three times a week 一周三次 every day 每天 be good for 对……有益 be bad for 对……有害 go to bed early 早睡 get up early 早起 too much 太多（不可数） too many 太多（可数） 第三部分 重点句型汇总 共收录本单元核心句型 10 组，注意中英文对照理解。 英文句型 中文翻译 同类拓展 How often do you exercise? 你多久锻炼一次？ I usually exercise every day. Do you often eat vegetables? 你经常吃蔬菜吗？ Yes, I do. / No, I don't. You should eat healthy food. 你应该吃健康食物。 You shouldn't eat too much candy. Is milk good for us? 牛奶对我们有益吗？ Yes, it is. It's good for our teeth. Why not go jogging? 为什么不慢跑呢？ Let's go jogging together! It's important to brush teeth. 刷牙很重要。 It's necessary to drink water. How many times a week? 一周多少次？ Three times a week. Too much sugar is bad for you. 太多糖对你有害。 Too many snacks are unhealthy. We always go to bed early. 我们总是早睡。 He never eats fast food. Stay fit and healthy! 保持健康！ Let's keep healthy together! 第四部分 重点语法汇总 语法一：频度副词的位置与选用 always(100%) > usually(80%) > often(60%) > sometimes(40%) > never(0%)。频度副词放在 be 动词后、实义动词前。如：I am always late. / I usually get up early. 语法二：should / shouldn't 提建议 should + 动词原形，表示"应该"；shouldn't = should not，表示"不应该"。如：You should eat more vegetables. / You shouldn't eat too much candy. 语法三：祈使句（肯定与否定） 肯定祈使句以动词原形开头：Brush your teeth every day. 否定祈使句以 Don't 开头：Don't eat too much sugar. 表健康建议常用 Please...：Please wash your hands. 语法四：How often...? 与频度回答 How often do you...? 问频率。回答用频度副词或次数：I always... / I usually... / I often... / Three times a week. / Every day. 语法五：too much / too many 辨析 too much + 不可数名词（sugar, water, meat）；too many + 可数名词复数（candies, snacks, eggs）。两者都表示"太多"，含否定意味。 语法六：be good for / be bad for be good for + 名词/代词，表示"对……有益"：Milk is good for our teeth. be bad for 表示"对……有害"：Too much candy is bad for your teeth. 第五部分 十大易错考点专项训练 每考点含基础题3道 + 提升题3道 + 拓展题3道，共90题。全部为选择题，选项横向排列。 考点一：频度副词的选用与位置（always/usually/often/sometimes/never） 基础题：（选择题） ◇（ ）1. ____ do you exercise? — I always exercise in the morning. A. How much B. How often C. How many D. How long ◇（ ）2. She ____ eats breakfast. She never skips it. A. never B. sometimes C. always D. seldom ◇（ ）3. We ____ go jogging in Kunming on Sundays. It's our habit. A. never B. usually C. hardly D. seldom 提升题：（选择题） ▷（ ）1. He is ____ late for school. He always arrives early. A. often B. usually C. always D. never ▷（ ）2. I ____ eat fast food in Wuhan because it's bad for my health. A. usually B. always C. never D. often ▷（ ）3. — How often does Bella play tennis? — She plays ____ twice a week. A. it B. them C. its D. they 拓展题：（选择题） ★（ ）1. Olivia ____ gets up at 6:00, but today she got up at 7:00 because she was ill. A. sometimes B. usually C. never D. hardly ★（ ）2. Chen Wei in Xiamen ____ watches TV on weekdays because he has too much homework. A. always B. usually C. often D. hardly ever ★（ ）3. Which is the correct order from most to least? ____ > usually > often > sometimes > never A. seldom B. always C. never D. hardly 考点二：How often...? 问答与次数表达（once/twice/three times a week） 基础题：（选择题） ◇（ ）1. — How often do you go swimming? — I go swimming ____ a week. A. one time B. once C. first D. one ◇（ ）2. Lily goes to the park in Jinan ____ a month. She loves flowers there. A. two time B. twice C. second D. two times ◇（ ）3. — ____ does Zhang Hao play basketball? — Three times a week. A. How much B. How many C. How often D. How long 提升题：（选择题） ▷（ ）1. We go jogging ____ a week. Monday, Wednesday and Friday. A. three time B. three times C. third times D. three ▷（ ）2. — How often do you visit your grandma in Qingdao? — ____. A. For two days B. Since Monday C. Once a month D. In a week ▷（ ）3. Bella in Wuhan ____ goes to the dentist. She goes every six months. A. two times a year B. twice a year C. second a year D. two time a year 拓展题：（选择题） ★（ ）1. Jam in Jinan exercises every day. So he exercises ____ times a week. A. six B. seven C. eight D. five ★（ ）2. — How often do they eat out in Kunming? — ____. They cook at home every day. A. Always B. Usually C. Often D. Hardly ever ★（ ）3. Which is WRONG? ____ A. once a week B. twice a month C. three time a year D. four times a day 考点三：should / shouldn't + 动词原形（健康建议） 基础题：（选择题） ◇（ ）1. You ____ eat more vegetables. They are good for you. A. should B. shouldn't C. mustn't D. can't ◇（ ）2. You ____ eat too much candy. It's bad for your teeth. A. should B. shouldn't C. can D. will ◇（ ）3. — I have a toothache. — You ____ see a dentist. A. shouldn't B. should C. can't D. don't 提升题：（选择题） ▷（ ）1. Children in Xiamen ____ drink too much cola. It has too much sugar. A. should B. must C. shouldn't D. need ▷（ ）2. — Must I finish homework now? — No, you ____. You can do it after dinner. A. mustn't B. needn't C. shouldn't D. can't ▷（ ）3. We ____ keep our classroom clean every day. A. should B. shouldn't C. don't D. aren't 拓展题：（选择题） ★（ ）1. Olivia in Wuhan has a cold. The doctor says she ____ drink more water. A. shouldn't B. should C. will D. can't ★（ ）2. Which sentence is CORRECT? ____ A. You should to exercise. B. You should exercising. C. You should exercise. D. You should exercises. ★（ ）3. Chen Wei is very tired. He ____ stay up late tonight. A. should B. shouldn't C. can D. will 考点四：祈使句（肯定/否定）与健康习惯 基础题：（选择题） ◇（ ）1. ____ your teeth every morning and evening. A. Brushing B. Brush C. To brush D. Brushes ◇（ ）2. ____ eat too much sugar. It's bad for your health. A. Not B. No C. Don't D. Doesn't ◇（ ）3. Please ____ your hands before meals. A. wash B. washes C. washing D. to wash 提升题：（选择题） ▷（ ）1. — Let's go jogging in Kunming! — ____. I need to exercise more. A. Sorry B. No C. Good idea D. Don't ▷（ ）2. ____ late for school. You should arrive on time. A. Don't be B. Not be C. Don't D. Be not ▷（ ）3. ____ in the sun for too long. It's bad for your skin. A. Not stay B. Don't stay C. Not to stay D. Doesn't stay 拓展题：（选择题） ★（ ）1. Lily in Qingdao, ____ the window and let fresh air in. A. open B. opens C. to open D. opening ★（ ）2. Which is a polite command? ____ A. Shut up! B. Don't talk! C. Please sit down. D. Go out! ★（ ）3. — Can I eat this cake? — No, ____. It has too much sugar. A. please do B. you should C. don't eat it D. eat it please 考点五：be good for / be bad for 辨析 基础题：（选择题） ◇（ ）1. Milk ____ our bones. We should drink it every day. A. is good for B. is bad for C. is good at D. is bad to ◇（ ）2. Too much sugar ____ your teeth. A. is good for B. is bad for C. are good for D. are bad to ◇（ ）3. Vegetables ____ us. We should eat them every day. A. are bad for B. is good for C. are good for D. is bad for 提升题：（选择题） ▷（ ）1. Reading in the sun ____ your eyes. A. is good for B. is bad for C. are good at D. are bad to ▷（ ）2. Swimming ____ our health. It makes us strong. A. is bad for B. isn't good for C. is good for D. are good for ▷（ ）3. Junk food ____ children. Parents should say no. A. is good for B. is bad for C. are bad for D. are good at 拓展题：（选择题） ★（ ）1. — Is coffee good for kids in Wuhan? — No, it ____ them. A. is good for B. isn't bad for C. is bad for D. are good for ★（ ）2. Walking every day ____ your heart. A. are good for B. is good at C. is good for D. are bad for ★（ ）3. Which is RIGHT? Vegetables ____. A. is good for us B. are good for we C. are good for us D. is good for we 考点六：too much / too many / a lot of 辨析 基础题：（选择题） ◇（ ）1. Don't eat ____ candy. It's bad for your teeth. A. too many B. too much C. many too D. much too ◇（ ）2. There are ____ apples on the table. Please eat some. A. too much B. too many C. much too D. too ◇（ ）3. We drink ____ water every day in Xiamen to stay healthy. A. too many B. too much C. a lot of D. many 提升题：（选择题） ▷（ ）1. She eats ____ eggs for breakfast. Three or four every day! A. too much B. too many C. much too D. a lot ▷（ ）2. — Is there ____ milk in the fridge? — Yes, ____. A. much / a lot B. many / a lot of C. much / a lot of D. many / a lot ▷（ ）3. Don't put ____ sugar in your tea. One spoon is enough. A. too many B. too much C. many D. few 拓展题：（选择题） ★（ ）1. ____ children like eating snacks, but snacks are unhealthy. A. Too much B. Too many C. Much too D. Many too ★（ ）2. We should eat ____ fresh fruit and vegetables in Kunming. A. too much B. too many C. a lot of D. much ★（ ）3. Which is WRONG? ____ A. too much water B. too many books C. too much candies D. a lot of rice 考点七：Why not...? / Let's... 建议句型 基础题：（选择题） ◇（ ）1. — I'm tired. — ____ go to bed early tonight? A. Why not B. Why don't C. What not D. How not ◇（ ）2. — Let's go swimming in Qingdao! — ____. The water is cold today. A. Good idea B. Sorry, I can't C. Yes, we do D. No, we don't ◇（ ）3. ____ play basketball after school. It's good exercise. A. Let's B. Let C. Let's to D. Let we 提升题：（选择题） ▷（ ）1. — It's a sunny day in Jinan. — Why not ____ for a walk? A. go B. to go C. going D. goes ▷（ ）2. — Shall we go jogging? — ____. I need to exercise. A. No, thanks B. I don't C. Sure, let's go D. I can't ▷（ ）3. ____ watch TV now. You have homework to do. A. Let's B. Don't C. Please D. Let 拓展题：（选择题） ★（ ）1. Bella in Xiamen suggests: "____ eat out tonight." She wants Chinese food. A. Let's not B. Let's C. Don't D. Not ★（ ）2. — Why not take a break? — ____. I've been studying for hours. A. No, I can't B. Sorry C. Good idea D. I don't ★（ ）3. Which is WRONG? ____ A. Let's go. B. Why not go? C. Let's to go. D. Don't go. 考点八：It's important / necessary to + 动词原形 基础题：（选择题） ◇（ ）1. It's important ____ every day to stay healthy. A. exercise B. to exercise C. exercising D. exercises ◇（ ）2. It's necessary ____ enough water every day. A. drink B. drinking C. to drink D. drinks ◇（ ）3. ____ is important for us to eat breakfast every day. A. This B. That C. It D. What 提升题：（选择题） ▷（ ）1. It's not easy ____ up early on cold mornings. A. get B. to get C. getting D. gets ▷（ ）2. The doctor says it's important ____ teeth twice a day. A. brush B. to brush C. brushing D. brushes ▷（ ）3. It's good ____ vegetables and fruit every day. A. eat B. eating C. to eat D. eats 拓展题：（选择题） ★（ ）1. ____ necessary to wash hands before meals? A. It's B. Is it C. Are they D. Do they ★（ ）2. It's important for children ____ early and go to bed early. A. get up B. to get up C. getting up D. gets up ★（ ）3. Which is WRONG? ____ A. It's important to sleep. B. It's necessary exercise. C. It's good to read. D. It's easy to learn. 考点九：三餐与食物名词搭配（breakfast/lunch/dinner/snack） 基础题：（选择题） ◇（ ）1. I always eat ____ good breakfast. It gives me energy. A. a B. an C. the D. / ◇（ ）2. For ____, she usually has some bread and milk. A. breakfast B. lunch C. dinner D. snack ◇（ ）3. We have lunch ____ school every day. A. in B. at C. on D. to 提升题：（选择题） ▷（ ）1. He doesn't eat ____ for dinner. He only drinks water. A. something B. nothing C. anything D. everything ▷（ ）2. — What do you have for lunch? — I have rice, fish ____ vegetables. A. and B. but C. or D. so ▷（ ）3. Too many ____ are bad for your health. Stop eating them! A. snack B. snacks C. a snack D. some snack 拓展题：（选择题） ★（ ）1. Olivia often has an apple ____ breakfast. She likes fruit. A. for B. at C. in D. on ★（ ）2. Jam usually has ____ at 12:00. He is very hungry by then. A. breakfast B. lunch C. dinner D. a snack ★（ ）3. Which is WRONG? ____ A. have breakfast B. eat lunch C. drink dinner D. cook dinner 考点十：综合情景对话与逻辑推断（单元综合） 基础题：（选择题） ◇（ ）1. — How often do you exercise? — ____. I play sports every day. A. Seldom B. Never C. Always D. Hardly ever ◇（ ）2. — You look tired. — Yes, I ____ go to bed early last night. A. always B. didn't C. usually D. often ◇（ ）3. — Should I eat more fruit in Wuhan? — Yes, fruit ____ good for your body. A. is B. are C. isn't D. aren't 提升题：（选择题） ▷（ ）1. — Let's go jogging in the park. — I'd love to, but it's raining. ____. A. Let's go B. Good idea C. Maybe tomorrow D. I can't jogging ▷（ ）2. — Why not have some milk in Kunming? — ____. I like milk. A. No, thanks B. I don't C. Sorry D. Good idea ▷（ ）3. — Do you often eat fast food in Jinan? — ____. I know it's bad for me. A. Yes, always B. No, never C. Yes, often D. No, usually 拓展题：（选择题） ★（ ）1. Zhang Hao: "I brush my teeth twice a day." How often does he brush? ____. A. Once B. Twice C. Three times D. Never ★（ ）2. — Is jogging good exercise? — ____. It makes us strong. A. No, it isn't B. Yes, it is C. No, it doesn't D. Yes, it does ★（ ）3. — What's the best title for this unit? ____ A. How to Cook B. Stay Fit and Healthy C. My Favorite Food D. Go to School 第六部分 参考答案与详细解析 考点一：频度副词的选用与位置（always/usually/often/sometimes/never） 基础题 ◇（ ）1. ____ do you exercise? — I always exercise in the morning. 答案：B 解析：问频率用 How often，答语 always 提示问的是"多久一次"。 ◇（ ）2. She ____ eats breakfast. She never skips it. 答案：C 解析：never skips = 从不落下，说明她"总是"吃早餐，选 always。 ◇（ ）3. We ____ go jogging in Kunming on Sundays. It's our habit. 答案：B 解析：habit 习惯说明经常做，usually 表示"通常"符合语境。 提升题 ▷（ ）1. He is ____ late for school. He always arrives early. 答案：D 解析：always arrives early 总是早到，说明"从不"迟到，选 never。 ▷（ ）2. I ____ eat fast food in Wuhan because it's bad for my health. 答案：C 解析：bad for health 对健康有害，所以"从不"吃快餐，选 never。 ▷（ ）3. — How often does Bella play tennis? — She plays ____ twice a week. 答案：A 解析：play tennis 打网球，tennis 不可数/单数概念，用 it 替代。 拓展题 ★（ ）1. Olivia ____ gets up at 6:00, but today she got up at 7:00 because she was ill. 答案：B 解析：but today 转折说明平时"通常"6点起，今天例外，选 usually。 ★（ ）2. Chen Wei in Xiamen ____ watches TV on weekdays because he has too much homework. 答案：D 解析：too much homework 作业太多，所以"几乎不"看，hardly ever 表示频率极低。 ★（ ）3. Which is the correct order from most to least? ____ > usually > often > sometimes > never 答案：B 解析：频度从高到低：always(100%) > usually(80%) > often(60%) > sometimes(40%) > never(0%)。 考点二：How often...? 问答与次数表达（once/twice/three times a week） 基础题 ◇（ ）1. — How often do you go swimming? — I go swimming ____ a week. 答案：B 解析："一次"用 once，固定用法。one time 是错误表达。 ◇（ ）2. Lily goes to the park in Jinan ____ a month. She loves flowers there. 答案：B 解析："两次"用 twice，固定用法。三次及以上用"数字 + times"。 ◇（ ）3. — ____ does Zhang Hao play basketball? — Three times a week. 答案：C 解析：答语 Three times a week 是频率，问频率用 How often。 提升题 ▷（ ）1. We go jogging ____ a week. Monday, Wednesday and Friday. 答案：B 解析：三次 = three times，time 作"次数"讲时是可数名词。 ▷（ ）2. — How often do you visit your grandma in Qingdao? — ____. 答案：C 解析：How often 问频率，回答用 once a month（每月一次）等频率表达。 ▷（ ）3. Bella in Wuhan ____ goes to the dentist. She goes every six months. 答案：B 解析："每年两次"用 twice a year，twice 是固定词。 拓展题 ★（ ）1. Jam in Jinan exercises every day. So he exercises ____ times a week. 答案：B 解析：every day = 每天，一周七天，所以是 seven times a week。 ★（ ）2. — How often do they eat out in Kunming? — ____. They cook at home every day. 答案：D 解析：cook at home every day 每天在家做饭，所以"几乎不在外吃"，选 Hardly ever。 ★（ ）3. Which is WRONG? ____ 答案：C 解析：三次应为 three times，time 表"次数"可数，要加 s。C 错在 time 没加 s。 考点三：should / shouldn't + 动词原形（健康建议） 基础题 ◇（ ）1. You ____ eat more vegetables. They are good for you. 答案：A 解析：蔬菜有益健康，建议"应该"多吃，用 should + 动词原形。 ◇（ ）2. You ____ eat too much candy. It's bad for your teeth. 答案：B 解析：糖果伤牙，建议"不应该"多吃，用 shouldn't + 动词原形。 ◇（ ）3. — I have a toothache. — You ____ see a dentist. 答案：B 解析：牙疼建议"应该"看牙医，should + see 原形。 提升题 ▷（ ）1. Children in Xiamen ____ drink too much cola. It has too much sugar. 答案：C 解析：可乐含糖太高，孩子"不应该"多喝，选 shouldn't。 ▷（ ）2. — Must I finish homework now? — No, you ____. You can do it after dinner. 答案：C 解析：Must I...? 否定回答用 needn't 或 don't have to，表示"不必"。 ▷（ ）3. We ____ keep our classroom clean every day. 答案：A 解析：keep...clean 保持干净是好习惯，用 should 提建议。 拓展题 ★（ ）1. Olivia in Wuhan has a cold. The doctor says she ____ drink more water. 答案：B 解析：感冒要多喝水，should drink 表示"应该喝"。 ★（ ）2. Which sentence is CORRECT? ____ 答案：C 解析：should 后必须接动词原形，不能加 to，不能加 ing 或 s。 ★（ ）3. Chen Wei is very tired. He ____ stay up late tonight. 答案：B 解析：很累的情况下"不应该"熬夜，选 shouldn't。 考点四：祈使句（肯定/否定）与健康习惯 基础题 ◇（ ）1. ____ your teeth every morning and evening. 答案：B 解析：祈使句以动词原形开头，肯定祈使句直接用 Brush。 ◇（ ）2. ____ eat too much sugar. It's bad for your health. 答案：C 解析：否定祈使句以 Don't + 动词原形开头。 ◇（ ）3. Please ____ your hands before meals. 答案：A 解析：Please 开头的祈使句也用动词原形 wash。 提升题 ▷（ ）1. — Let's go jogging in Kunming! — ____. I need to exercise more. 答案：C 解析：对 Let's... 的建议表示赞同用 Good idea! / OK! / Great! ▷（ ）2. ____ late for school. You should arrive on time. 答案：A 解析：be late 迟到，否定祈使句 Don't be + adj. ▷（ ）3. ____ in the sun for too long. It's bad for your skin. 答案：B 解析：否定祈使句用 Don't + 动词原形 stay。 拓展题 ★（ ）1. Lily in Qingdao, ____ the window and let fresh air in. 答案：A 解析：祈使句用动词原形 open，表示命令或请求。 ★（ ）2. Which is a polite command? ____ 答案：C 解析：Please + 原形 是最礼貌的祈使句表达方式。 ★（ ）3. — Can I eat this cake? — No, ____. It has too much sugar. 答案：C 解析：否定建议用 Don't eat it. 其他三项都是鼓励吃的意思。 考点五：be good for / be bad for 辨析 基础题 ◇（ ）1. Milk ____ our bones. We should drink it every day. 答案：A 解析：牛奶对骨骼有益，be good for 表示"对……有益"。 ◇（ ）2. Too much sugar ____ your teeth. 答案：B 解析：太多糖"对牙齿有害"，sugar 不可数用 is，选 is bad for。 ◇（ ）3. Vegetables ____ us. We should eat them every day. 答案：C 解析：蔬菜是复数，对我们有益，用 are good for。 提升题 ▷（ ）1. Reading in the sun ____ your eyes. 答案：B 解析：在阳光下看书"对眼睛有害"，reading 作主语视为单数，用 is bad for。 ▷（ ）2. Swimming ____ our health. It makes us strong. 答案：C 解析：游泳对健康有益，swimming 单数，用 is good for。 ▷（ ）3. Junk food ____ children. Parents should say no. 答案：B 解析：junk food 是不可数名词，"对孩子们有害"，用 is bad for。 拓展题 ★（ ）1. — Is coffee good for kids in Wuhan? — No, it ____ them. 答案：C 解析：咖啡对孩子有害，用 is bad for，it 替代 coffee 单数。 ★（ ）2. Walking every day ____ your heart. 答案：C 解析：每天散步"对心脏有益"，walking 单数用 is，选 is good for。 ★（ ）3. Which is RIGHT? Vegetables ____. 答案：C 解析：vegetables 复数用 are，for 后接宾格 us，选 are good for us。 考点六：too much / too many / a lot of 辨析 基础题 ◇（ ）1. Don't eat ____ candy. It's bad for your teeth. 答案：B 解析：candy 糖果在此为不可数名词，用 too much + 不可数。 ◇（ ）2. There are ____ apples on the table. Please eat some. 答案：B 解析：apples 可数复数，用 too many + 可数复数。 ◇（ ）3. We drink ____ water every day in Xiamen to stay healthy. 答案：C 解析：water 不可数，a lot of 可修饰不可数名词，表示"大量"。 提升题 ▷（ ）1. She eats ____ eggs for breakfast. Three or four every day! 答案：B 解析：eggs 可数复数，用 too many 表示"太多"（含过量意味）。 ▷（ ）2. — Is there ____ milk in the fridge? — Yes, ____. 答案：A 解析：milk 不可数，疑问句用 much 提问 ▷（ ）3. Don't put ____ sugar in your tea. One spoon is enough. 答案：B 解析：sugar 不可数，用 too much 表示"太多"。 拓展题 ★（ ）1. ____ children like eating snacks, but snacks are unhealthy. 答案：B 解析：children 可数复数，用 Too many 表示"太多孩子"。 ★（ ）2. We should eat ____ fresh fruit and vegetables in Kunming. 答案：C 解析：fruit 和 vegetables 中 fruit 常不可数，用 a lot of 修饰最安全，表示"大量"。 ★（ ）3. Which is WRONG? ____ 答案：C 解析：candies 可数复数，应用 too many candies。C 错在 much 不能修饰可数复数。 考点七：Why not...? / Let's... 建议句型 基础题 ◇（ ）1. — I'm tired. — ____ go to bed early tonight? 答案：A 解析：Why not + 动词原形 = 为什么不……呢？表建议。Why don't you... 也对但此处无 you。 ◇（ ）2. — Let's go swimming in Qingdao! — ____. The water is cold today. 答案：B 解析：水太冷所以拒绝提议，用 Sorry, I can't。A 是赞同，C/D 答非所问。 ◇（ ）3. ____ play basketball after school. It's good exercise. 答案：A 解析：Let's + 动词原形 = 让我们……吧。Let's = Let us。 提升题 ▷（ ）1. — It's a sunny day in Jinan. — Why not ____ for a walk? 答案：A 解析：Why not 后接动词原形，选 go。 ▷（ ）2. — Shall we go jogging? — ____. I need to exercise. 答案：C 解析：Shall we...? 提建议，赞同用 Sure, let's go / Good idea。 ▷（ ）3. ____ watch TV now. You have homework to do. 答案：B 解析：有作业要做，所以"不要"看电视，用 Don't + 原形。 拓展题 ★（ ）1. Bella in Xiamen suggests: "____ eat out tonight." She wants Chinese food. 答案：B 解析：suggest 建议，Let's + 原形 表提议"让我们今晚出去吃吧"。 ★（ ）2. — Why not take a break? — ____. I've been studying for hours. 答案：C 解析：学了很久，同意休息，用 Good idea / Yes, let's。 ★（ ）3. Which is WRONG? ____ 答案：C 解析：Let's 后接动词原形，不能加 to。C 错在 Let's to go。 考点八：It's important / necessary to + 动词原形 基础题 ◇（ ）1. It's important ____ every day to stay healthy. 答案：B 解析：It's important to + 动词原形，不定式作真正主语，it 是形式主语。 ◇（ ）2. It's necessary ____ enough water every day. 答案：C 解析：It's necessary to + 原形，表示"做……是必要的"。 ◇（ ）3. ____ is important for us to eat breakfast every day. 答案：C 解析：固定句型：It is + adj. + for sb. + to do sth. it 作形式主语。 提升题 ▷（ ）1. It's not easy ____ up early on cold mornings. 答案：B 解析：It's + adj. + to do，get up 起床，用 to get。 ▷（ ）2. The doctor says it's important ____ teeth twice a day. 答案：B 解析：it's important to brush teeth，刷牙很重要。 ▷（ ）3. It's good ____ vegetables and fruit every day. 答案：C 解析：It's good to + 原形，表示"做……是好的"。 拓展题 ★（ ）1. ____ necessary to wash hands before meals? 答案：B 解析：疑问句将 is 提前：Is it necessary to...? 其他形式不对。 ★（ ）2. It's important for children ____ early and go to bed early. 答案：B 解析：It's important to get up early，it 是形式主语，to get up 是真正主语。 ★（ ）3. Which is WRONG? ____ 答案：B 解析：缺少 to，应为 It's necessary to exercise。B 错在 exercise 前无 to。 考点九：三餐与食物名词搭配（breakfast/lunch/dinner/snack） 基础题 ◇（ ）1. I always eat ____ good breakfast. It gives me energy. 答案：A 解析：breakfast 以辅音音素开头，用 a good breakfast 表示"一顿好早餐"。 ◇（ ）2. For ____, she usually has some bread and milk. 答案：A 解析：bread and milk 面包牛奶通常是早餐食物，选 breakfast。 ◇（ ）3. We have lunch ____ school every day. 答案：B 解析：at school 是固定搭配，表示"在学校"。 提升题 ▷（ ）1. He doesn't eat ____ for dinner. He only drinks water. 答案：C 解析：否定句中用 anything，doesn't eat anything = 什么都不吃。 ▷（ ）2. — What do you have for lunch? — I have rice, fish ____ vegetables. 答案：A 解析：并列关系用 and，rice, fish and vegetables 米饭、鱼和蔬菜。 ▷（ ）3. Too many ____ are bad for your health. Stop eating them! 答案：B 解析：too many + 可数复数，snack 复数是 snacks。 拓展题 ★（ ）1. Olivia often has an apple ____ breakfast. She likes fruit. 答案：A 解析：have...for breakfast 是固定搭配，表示"早餐吃……"。 ★（ ）2. Jam usually has ____ at 12:00. He is very hungry by then. 答案：B 解析：12:00 中午12点吃的是 lunch 午餐。 ★（ ）3. Which is WRONG? ____ 答案：C 解析：晚餐用 eat/have dinner，drink 是"喝"不能搭配 dinner。C 错误。 考点十：综合情景对话与逻辑推断（单元综合） 基础题 ◇（ ）1. — How often do you exercise? — ____. I play sports every day. 答案：C 解析：every day 每天，对应 always 总是，频率最高。 ◇（ ）2. — You look tired. — Yes, I ____ go to bed early last night. 答案：B 解析：look tired 看起来累，说明昨晚"没有"早睡，用 didn't。 ◇（ ）3. — Should I eat more fruit in Wuhan? — Yes, fruit ____ good for your body. 答案：A 解析：fruit 作"水果"统称时不可数，用 is。对身体有益用 is good for。 提升题 ▷（ ）1. — Let's go jogging in the park. — I'd love to, but it's raining. ____. 答案：C 解析：下雨不能去，但礼貌地提议明天，Maybe tomorrow 最得体。 ▷（ ）2. — Why not have some milk in Kunming? — ____. I like milk. 答案：D 解析：喜欢牛奶，赞同建议，用 Good idea / Yes, please。 ▷（ ）3. — Do you often eat fast food in Jinan? — ____. I know it's bad for me. 答案：B 解析：知道有害所以"从不"吃，No, never 最符合逻辑。 拓展题 ★（ ）1. Zhang Hao: "I brush my teeth twice a day." How often does he brush? ____. 答案：B 解析：twice a day 一天两次，直接对应 twice。 ★（ ）2. — Is jogging good exercise? — ____. It makes us strong. 答案：B 解析：Is...? 问句用 is 回答。jogging 是好运动，肯定 Yes, it is。 ★（ ）3. — What's the best title for this unit? ____ 答案：B 解析：本单元主题就是 Stay fit and healthy 保持健康，B 最贴切。 — 第 页 — 学科网（北京）股份有限公司 $