Unit 3 Helping Hands at Home单元知识总结及重点易错（专项训练）-2026-2027学年科普版五年级上册英语

**基本信息** 聚焦五年级上册Unit 3家务主题，以十大重点易错考点为核心，构建"知识归纳+分层训练+解析拓展"体系，系统提升语言运用与逻辑分析能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |十大考点|每考点9题（基础×3+提升×3+拓展×3）|情态动词can结构（原形/无人称变化）、频度副词位置（be后/实义动前）、祈使句构成（动词原形/Don't+原形）等|从单词短语到句型语法，再到综合语境运用，形成"基础用法→变式应用→错误辨析"递进链条|

科普版五年级上册英语 · Unit 3 Helping Hands at Home · 专项训练 科普版五年级上册英语 Unit 3 Helping Hands at Home 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。 Part 1 单元重点知识归纳 ★ 重点单词 (Key Words) chore 家务劳动 often 经常 think 思考 out （拿）出；在室外 sometimes 有时 keep 保持 rubbish 垃圾 twice 两次 week 周；星期 feed 喂养；饲养 once 一次 enough 足够的 dish 盘子 always 总是 before 在……之前 tidy 整理 live 居住；生活 bedtime 就寝时间 sweep 打扫；清除 never 从不 sleep 睡觉 ★ 重点短语 (Key Phrases) feed the dog — 喂狗 water the plants — 给植物浇水 make the bed — 整理床铺 sweep the floor — 扫地 take out the rubbish — 倒垃圾 wash the dishes — 洗碗 tidy up the desk — 整理书桌 cook dinner — 做晚饭 get the table ready — 摆好餐桌 go shopping for food — 去买食物 help sb. with sth. — 帮助某人做某事 pick bananas — 摘香蕉 once a week — 一周一次 twice a week — 一周两次 three times a week — 一周三次 every day / every morning — 每天 / 每天早上 ★ 重点句型 (Key Sentences) ▸ — What can you do at home? — I can sweep the floor and water the plants. 你在家能做什么？——我能扫地和浇植物。 ▸ — Do you often do chores at home? — Yes, I do. / No, I don't. 你经常在家做家务吗？——是的。/ 不是。 ▸ — What chores do you do at home? — I make the bed and feed the dog. 你在家做什么家务？——我整理床铺和喂狗。 ▸ — How often do you do these chores? — I sweep the floor twice a week. 你多久做一次这些家务？——我一周扫两次地。 ▸ You should help your family tidy up your room. 你应该帮家人整理你的房间。 ▸ Don't forget to take out the rubbish after dinner. 晚饭后别忘了倒垃圾。 ▸ I always help at home. 我在家总是帮忙。 ▸ I feed the fish every morning. 我每天早上喂鱼。 ★ 重点语法 (Key Grammar) ☑ 语法点一：情态动词 can ◆ 含义：表示能力（能、会），也可表请求或许可（可以）。 ◆ 结构：主语 + can + 动词原形 + 其他。（否定：can't / cannot） ◆ 疑问句：Can + 主语 + 动词原形 + 其他？ 回答：Yes, ... can. / No, ... can't. ◆ 注意：can 没有人称和数的变化（he/she 后面不加 s）；后接动词必须用原形。 ◆ 例：I can sweep the floor. He can feed the dog. Can you cook dinner? ☑ 语法点二：频度副词与频度短语 ◆ always (100%) ｜ 位置：be 动词后 / 实义动词前 例：I am always happy. / I always make my bed. ◆ usually (80%) ｜ 位置：be 动词后 / 实义动词前 例：She usually cooks dinner. ◆ often (60%) ｜ 位置：be 动词后 / 实义动词前 例：They often sweep the floor. ◆ sometimes (40%) ｜ 位置：句首 / be 后 / 动词前 例：Sometimes I feed the dog. ◆ never (0%) ｜ 位置：be 动词后 / 实义动词前 例：He never takes out the rubbish. ◆ 频度短语（放句末）：once a week (一周一次) / twice a week (一周两次) / three times a week (一周三次) / every day (每天) ☑ 语法点三：祈使句（Imperative Sentences） ◆ 肯定祈使句：动词原形开头（省略主语 you），表示命令、请求或建议。 例：Sweep the floor. Make the bed. ◆ 否定祈使句：Don't + 动词原形。 例：Don't forget to take out the rubbish. ◆ Let 型：Let + 宾语 + 动词原形。 例：Let me help you. Let's tidy up the desk. ☑ 语法点四：Do / Does 引导的一般疑问句 ◆ 问句：Do / Does + 主语 + 动词原形 + 其他？ ◆ 回答：Yes, 主语 + do/does. No, 主语 + don't/doesn't. ◆ 注意：does 用于第三人称单数（he/she/it），后面动词用原形。 ◆ 例：— Do you feed the dog at home? — Yes, I do. ◆ 例：— Does he sweep the floor every day? — No, he doesn't. Part 2 十大重点易错考点专项训练 考点一：情态动词 can 的用法（后接动词原形 / 无人称变化） ◇ 基础题（选择题） ◇ ( ) 1. I ______ sweep the floor at home. A. can B. cans C. can to ◇ ( ) 2. She ______ feed the dog every morning. A. can B. can to C. cans ◇ ( ) 3. — Can you water the plants? — ______ A. Yes, I can. B. Yes, I do. C. No, I can. ▷ 提升题（选择题） ▷ ( ) 1. My mum ______ cook dinner, but my dad ______. A. can; can't B. can; can C. cans; can't ▷ ( ) 2. — What can Chen Wei do at home? — He ______ the bed. A. can make B. can makes C. can to make ▷ ( ) 3. They ______ sweep the floor, but they ______ wash the dishes. A. can; can't B. can; can C. cans; can't ★ 拓展题（选择题） ★ ( ) 1. Which sentence is CORRECT? A. He can sweeps the floor. B. He can sweep the floor. C. He cans sweep the floor. ★ ( ) 2. — Can Lily and Bella tidy up the desk? — ______ A. Yes, she can. B. Yes, they can. C. Yes, they do. ★ ( ) 3. Olivia ______ cook dinner, so she always ______ her mum. A. can; help B. can; helps C. cans; help 考点二：频度副词的位置与辨析（always / usually / often / sometimes / never） ◇ 基础题（选择题） ◇ ( ) 1. I ______ make my bed every morning. A. always B. am always C. always am ◇ ( ) 2. She is ______ late for school. A. never B. never is C. is never ◇ ( ) 3. They ______ go shopping on weekends. A. often B. are often C. often are ▷ 提升题（选择题） ▷ ( ) 1. Which sentence is WRONG? A. I sometimes feed the dog. B. Sometimes I feed the dog. C. I am sometimes feed the dog. ▷ ( ) 2. Zhang Hao ______ tidies up his desk. He never forgets. A. always B. never C. sometimes ▷ ( ) 3. — How often does Zhou Kai water the plants? — He ______ does it twice a week. A. never B. usually C. is often ★ 拓展题（选择题） ★ ( ) 1. Choose the sentence with the correct adverb position: A. She always is happy. B. She is always happy. C. Always she is happy. ★ ( ) 2. Lily ______ helps at home. She ______ takes out the rubbish. A. always; usually B. is always; usually C. always; is usually ★ ( ) 3. Which is TRUE about frequency order? A. never > sometimes > often > always B. always > usually > often > sometimes > never C. sometimes > always > never > often 考点三：频度短语（once / twice / three times a week / every day） ◇ 基础题（选择题） ◇ ( ) 1. I sweep the floor ______ a week. A. one B. once C. first ◇ ( ) 2. She cooks dinner ______ a week. A. two B. second C. twice ◇ ( ) 3. They water the plants three ______ a week. A. time B. times C. timed ▷ 提升题（选择题） ▷ ( ) 1. — How often do you tidy up the desk? — I do it ______. A. every day B. once day C. everyday ▷ ( ) 2. Ken makes his bed ______ a week. He does it on Monday, Wednesday and Friday. A. once B. twice C. three times ▷ ( ) 3. Olivia goes shopping for food with her mum ______. A. on weekends B. in weekends C. at weekends ★ 拓展题（选择题） ★ ( ) 1. Which expression is WRONG? A. four times a month B. one times a week C. three times a year ★ ( ) 2. — How often does Deepak water the banana plants? — He does it ______. A. twice a week B. two a week C. second a week ★ ( ) 3. I feed the fish ______ morning. I never forget. A. every B. each C. all 考点四：祈使句（肯定：动词原形；否定：Don't + 动词原形） ◇ 基础题（选择题） ◇ ( ) 1. ______ the floor after dinner. A. Sweep B. Sweeps C. Sweeping ◇ ( ) 2. ______ forget to take out the rubbish. A. Not B. Don't C. Doesn't ◇ ( ) 3. Let's ______ the dishes together. A. wash B. washes C. to wash ▷ 提升题（选择题） ▷ ( ) 1. Which is a correct imperative sentence? A. You sweep the floor. B. Sweep the floor. C. She sweeps the floor. ▷ ( ) 2. Mum says to Alan: "______ your bed every morning." A. Make B. Makes C. Made ▷ ( ) 3. "______ tidy up the desk," says Chen Wei's teacher. A. Not B. Don't C. Doesn't ★ 拓展题（选择题） ★ ( ) 1. Which sentence is a correct negative imperative? A. Don't to make the bed. B. Don't make the bed. C. Not make the bed. ★ ( ) 2. — Let me help you. — ______ A. Let's go. B. Let's to tidy up. C. Let's tidy up. ★ ( ) 3. Choose the correct order: ______ the rubbish ______ the floor ______ the bed A. Take out; sweep; make B. Take; sweep; do C. Do; clean; take 考点五：Do / Does 引导的一般疑问句及回答 ◇ 基础题（选择题） ◇ ( ) 1. — Do you often do chores? — ______ A. Yes, I am. B. Yes, I do. C. Yes, I can. ◇ ( ) 2. — Does she feed the dog? — ______ A. Yes, she do. B. Yes, she does. C. Yes, she is. ◇ ( ) 3. — Do they wash the dishes? — ______ A. No, they don't. B. No, they doesn't. C. No, they aren't. ▷ 提升题（选择题） ▷ ( ) 1. — ______ Zhou Kai often tidy up his desk? — Yes, he does. A. Do B. Does C. Is ▷ ( ) 2. — Does Lily cook dinner every day? — ______ A. No, she don't. B. No, she does. C. No, she doesn't. ▷ ( ) 3. — ______ you and your brother sweep the floor? — Yes, we do. A. Does B. Do C. Are ★ 拓展题（选择题） ★ ( ) 1. Which dialogue is CORRECT? A. — Do she feed the dog? — Yes, she do. B. — Does she feed the dog? — Yes, she does. C. — Does she feeds the dog? — Yes, she does. ★ ( ) 2. — Do Olivia and Bella do chores at home? — ______ A. Yes, they does. B. Yes, they do. C. Yes, she do. ★ ( ) 3. — Does Chen Wei help his family? — ______ He always tidies up his room. A. No, he doesn't. B. Yes, he is. C. Yes, he does. 考点六：家务短语的搭配与运用（feed the dog / make the bed 等） ◇ 基础题（选择题） ◇ ( ) 1. I help my mum ______ the dishes after dinner. A. wash B. washes C. washing ◇ ( ) 2. Dad asks me to ______ the bed every morning. A. do B. make C. clean ◇ ( ) 3. Please ______ out the rubbish before you go to school. A. bring B. take C. carry ▷ 提升题（选择题） ▷ ( ) 1. Which phrase is different from the others? A. feed the dog B. water the plants C. go shopping ▷ ( ) 2. After dinner, Zhang Hao ______ the table and ______ the dishes. A. tidies up; washes B. tidy up; wash C. tidies; wash ▷ ( ) 3. Mum is ill. Alan helps Dad ______ the chores. A. with B. for C. to ★ 拓展题（选择题） ★ ( ) 1. Choose the correct phrase: I need to ______ my desk. It's so messy! A. tidy up B. tidy it up C. tidy up it ★ ( ) 2. — What does Zhao Xue do every day? — She ______ the rubbish and ______ the fish. A. takes out; feeds B. take out; feed C. takes; feed ★ ( ) 3. At Luke's farm, he ______ the cows and ______ the milk every morning. A. feed; get B. feeds; gets C. feeds; get 考点七：第三人称单数动词变化（he/she + 动词 s/es） ◇ 基础题（选择题） ◇ ( ) 1. Lily often ______ the floor on Sundays. A. sweep B. sweeps C. sweeping ◇ ( ) 2. Chen Wei ______ the dog every day. A. feed B. feeds C. feeding ◇ ( ) 3. Bella always ______ the bed in the morning. A. make B. makes C. making ▷ 提升题（选择题） ▷ ( ) 1. Zhang Hao ______ dinner twice a week. He is a good cook! A. cook B. cooks C. cooking ▷ ( ) 2. My sister ______ the plants every morning, but I ______ them every evening. A. water; water B. waters; water C. water; waters ▷ ( ) 3. Olivia ______ her room every day. She never forgets. A. tidy up B. tidies up C. tidies ★ 拓展题（选择题） ★ ( ) 1. Which sentence has a verb error? A. He sweep the floor every day. B. She sweeps the floor every day. C. They sweep the floor every day. ★ ( ) 2. — What does Zhou Kai do after school? — He ______ his homework and then ______ the dishes. A. do; wash B. does; washes C. does; wash ★ ( ) 3. The boy ______ in Australia. He ______ up at 5:30 every morning. A. live; get B. lives; gets C. lives; get 考点八：How often 引导的特殊疑问句 ◇ 基础题（选择题） ◇ ( ) 1. — ______ do you sweep the floor? — Twice a week. A. What B. How often C. How ◇ ( ) 2. — How often does he water the plants? — ______ A. Three times a week. B. At 5:30. C. In the morning. ◇ ( ) 3. — ______ often do you cook dinner? — Once a week. A. What B. How C. When ▷ 提升题（选择题） ▷ ( ) 1. — How often ______ Lily take out the rubbish? — Every day. A. do B. does C. is ▷ ( ) 2. — How often do they tidy up the desk? — ______ A. Three time a week. B. Three times a week. C. Three times week. ▷ ( ) 3. — How often does your mum cook dinner? — ______ A. She cooks every day. B. She often cooks. C. Both A and B. ★ 拓展题（选择题） ★ ( ) 1. Which question matches the answer "Twice a month"? A. What do you do? B. How often do you go shopping? C. When do you get up? ★ ( ) 2. — How often do Olivia and Bella do chores? — ______ A. They does chores every day. B. They do chores every day. C. They are do chores every day. ★ ( ) 3. Choose the correct sentence: "______" A. How often do he feed the dog? B. How often does he feed the dog? C. How often he feed the dog? 考点九：help 的用法（help sb. do sth. / help sb. with sth.） ◇ 基础题（选择题） ◇ ( ) 1. I often help Mum ______ dinner. A. cook B. cooks C. to cook ◇ ( ) 2. Can you help me ______ the floor? A. sweep B. sweeps C. sweeping ◇ ( ) 3. Alan helps Dad ______ the chores. A. with B. for C. to ▷ 提升题（选择题） ▷ ( ) 1. She always helps her brother ______ his homework. A. with B. for C. to ▷ ( ) 2. — Do you help your parents at home? — Yes, I help them ______ the house. A. clean B. cleans C. cleaning ▷ ( ) 3. Olivia helps Bella ______ the bed every morning. A. make B. makes C. making ★ 拓展题（选择题） ★ ( ) 1. Which sentence is WRONG? A. She helps me cook dinner. B. She helps me with cooking dinner. C. She helps me to cooking dinner. ★ ( ) 2. Zhang Hao ______ his mum ______ the dishes every day. A. helps; wash B. help; washes C. helps; washes ★ ( ) 3. Choose the correct sentence: A. They help their dad with sweep the floor. B. They help their dad sweep the floor. C. They help their dad to sweeps the floor. 考点十：综合语境运用（时间状语 / 介词 / 语境理解） ◇ 基础题（选择题） ◇ ( ) 1. I get up ______ 5:30 every morning. A. in B. on C. at ◇ ( ) 2. She lives ______ a farm in Australia. A. in B. on C. at ◇ ( ) 3. After dinner, I tidy up the table ______ wash the dishes. A. and B. or C. but ▷ 提升题（选择题） ▷ ( ) 1. ______ weekends, I go shopping for food with my mum. A. In B. On C. At ▷ ( ) 2. It is hard work, ______ I'm happy. A. and B. or C. but ▷ ( ) 3. In autumn, I often help my parents pick bananas ______ school. A. after B. in C. on ★ 拓展题（选择题） ★ ( ) 1. Choose the correct sentence about Luke: A. Luke live on a farm in Australia. B. Luke lives on a farm in Australia. C. Luke lives in a farm in Australia. ★ ( ) 2. — What does Zhao Xue do before dinner? — She ______ the table ready. A. gets B. get C. got ★ ( ) 3. Mum is ill ______ bed this weekend. Alan helps Dad. A. in B. on C. at Part 3 参考答案与详细解析 考点一：情态动词 can 的用法 基础题 1 答案：A 解析：can 后接动词原形，没有人称变化，不加 s，也不加 to。I can sweep the floor. 基础题 2 答案：A 解析：can 没有人称变化，he/she 后用 can，不加 s。She can feed the dog. 基础题 3 答案：A 解析：Can 引导的一般疑问句，肯定回答为 Yes, 主语 + can. 否定回答为 No, 主语 + can't. 提升题 1 答案：A 解析：前半句主语 my mum 用 can，后半句 my dad 否定用 can't。注意 can 后都用动词原形。 提升题 2 答案：A 解析：can 后接动词原形 make，不能加 s 或 to。He can make the bed. 提升题 3 答案：A 解析：they 作主语，肯定用 can，否定用 can't。They can sweep the floor, but they can't wash the dishes. 拓展题 1 答案：B 解析：can 后必须用动词原形 sweep，he 后面 can 不加 s。正确：He can sweep the floor. 拓展题 2 答案：B 解析：Lily and Bella 是复数，用 they 代替。Can 引导的疑问句用 can 回答。Yes, they can. 拓展题 3 答案：B 解析：Olivia 是第三人称单数，help 要加 s 变为 helps。前用 can，后用 helps。 考点二：频度副词的位置与辨析 基础题 1 答案：A 解析：频度副词 always 放在实义动词 make 前面。I always make my bed. 基础题 2 答案：C 解析：频度副词 never 放在 be 动词 is 后面。She is never late for school. 基础题 3 答案：A 解析：often 放在实义动词 go 前面。They often go shopping on weekends. 提升题 1 答案：C 解析：am/is/are 是 be 动词，后面不能直接跟动词原形 feed。正确：I am sometimes late. 提升题 2 答案：A 解析：He never forgets 说明他从不忘记，因此他总是整理书桌。always 表示100%频率。 提升题 3 答案：B 解析：usually 是频度副词，放在实义动词 does 前面。He usually does it twice a week. 拓展题 1 答案：B 解析：频度副词放在 be 动词之后、实义动词之前。She is always happy.（不是 always is） 拓展题 2 答案：A 解析：Lily 是第三人称单数，第一个空用 always（副词修饰动词 help→helps），第二个空用 usually helps。 拓展题 3 答案：B 解析：频度从高到低：always(100%) > usually(80%) > often(60%) > sometimes(40%) > never(0%)。 考点三：频度短语（once / twice / three times） 基础题 1 答案：B 解析：once 表示"一次"，是固定用法。twice 表示"两次"，三次及以上用 数字 + times。 基础题 2 答案：C 解析：twice 表示"两次"，是固定用法，不是 two 或 second。 基础题 3 答案：B 解析：三次及以上用 times。three times a week = 一周三次。 提升题 1 答案：A 解析：every day 是固定搭配，表示"每天"。没有 every day 这种写法（分开写才是正确短语）。 提升题 2 答案：C 解析：Monday, Wednesday and Friday = 三天 → three times a week。 提升题 3 答案：A 解析：on weekends 是固定搭配，表示"在周末"。注意介词用 on。 拓展题 1 答案：B 解析：一次必须用 once，不能说 one time 或 one times。正确：once a week / twice a week / three times a week。 拓展题 2 答案：A 解析：twice a week 是固定短语。Deepak 浇水频率是 twice a week。 拓展题 3 答案：A 解析：every morning 表示"每天早上"，every 后接单数名词。each 不用于此搭配。 考点四：祈使句（肯定与否定） 基础题 1 答案：A 解析：祈使句以动词原形开头，省略主语 you。Sweep the floor after dinner. 基础题 2 答案：B 解析：否定祈使句用 Don't + 动词原形。Don't forget to take out the rubbish. 基础题 3 答案：A 解析：Let's 后接动词原形。Let's wash the dishes together. 提升题 1 答案：B 解析：祈使句直接用动词原形开头，无主语。Sweep the floor. 是标准的祈使句。 提升题 2 答案：A 解析：祈使句用动词原形 Make。Make your bed every morning. 提升题 3 答案：B 解析：否定祈使句用 Don't。Don't tidy up the desk 意思是"不要整理书桌"。 拓展题 1 答案：B 解析：否定祈使句结构：Don't + 动词原形。Don't make the bed. 正确。 拓展题 2 答案：C 解析：Let's 后接动词原形 tidy up。Let's tidy up the desk. 拓展题 3 答案：A 解析：take out the rubbish（倒垃圾）、sweep the floor（扫地）、make the bed（整理床铺）是固定搭配。 考点五：Do / Does 一般疑问句 基础题 1 答案：B 解析：Do 引导的疑问句，用 do 回答。Yes, I do. / No, I don't. 基础题 2 答案：B 解析：Does 引导的疑问句，主语是 she，肯定回答用 Yes, she does. 基础题 3 答案：A 解析：they 作主语，否定回答用 No, they don't. 注意 doesn't 只用于单数。 提升题 1 答案：B 解析：Zhou Kai 是第三人称单数，用 Does 提问。Does Zhou Kai often tidy up his desk? 提升题 2 答案：C 解析：Lily 是第三人称单数，否定回答用 No, she doesn't. 注意 does 的否定形式是 doesn't。 提升题 3 答案：B 解析：you and your brother 是复数主语，用 Do 提问。Do you and your brother sweep the floor? 拓展题 1 答案：B 解析：Does she feed the dog? — Yes, she does. 注意 does 后动词用原形 feed。 拓展题 2 答案：B 解析：Olivia and Bella 是复数，用 Do 提问，用 they 回答。Yes, they do. 拓展题 3 答案：C 解析：Chen Wei 是单数，用 does 回答。根据后文 always tidies up，说明是肯定回答 Yes, he does. 考点六：家务短语搭配与运用 基础题 1 答案：A 解析：help sb. do sth. 结构，用动词原形 wash。help my mum wash the dishes。 基础题 2 答案：B 解析：make the bed（整理床铺）是固定搭配，不用 do 或 clean。 基础题 3 答案：B 解析：take out the rubbish（倒垃圾）是固定短语。take out = 拿出、倒掉。 提升题 1 答案：C 解析：feed the dog、water the plants 都是家务短语，而 go shopping 是"去购物"，不属于家务动作。 提升题 2 答案：A 解析：Zhang Hao 是第三人称单数，tidy up → tidies up，wash → washes。 提升题 3 答案：A 解析：help sb. with sth. 是固定搭配，表示"帮助某人做某事"。help Dad with the chores。 拓展题 1 答案：B 解析：tidy up 是"动词+副词"短语，代词 it/them 必须放在中间：tidy it up。名词可放中间或后面。 拓展题 2 答案：A 解析：She 是第三人称单数，take out → takes out，feed → feeds。 拓展题 3 答案：B 解析：He 是第三人称单数，feed → feeds，get → gets。 考点七：第三人称单数动词变化 基础题 1 答案：B 解析：Lily 是第三人称单数，sweep → sweeps。 基础题 2 答案：B 解析：Chen Wei 是第三人称单数，feed → feeds。 基础题 3 答案：B 解析：Bella 是第三人称单数，make → makes。 提升题 1 答案：B 解析：Zhang Hao 是第三人称单数，cook → cooks。 提升题 2 答案：B 解析：my sister 用 waters，I 用 water（不加 s）。注意前后主语不同。 提升题 3 答案：B 解析：Olivia 是第三人称单数，tidy up → tidies up（辅音+y 结尾，变 y 为 i 加 es）。 拓展题 1 答案：A 解析：He 是第三人称单数，sweep 应该加 s 变为 sweeps。正确：He sweeps the floor every day. 拓展题 2 答案：B 解析：Zhou Kai 是第三人称单数，do → does，wash → washes。 拓展题 3 答案：B 解析：The boy 是第三人称单数，live → lives，get → gets。 考点八：How often 特殊疑问句 基础题 1 答案：B 解析：How often 问频率，回答 Twice a week 表示频率。 基础题 2 答案：A 解析：How often 问"多久一次"，回答 Three times a week 是频率。At 5:30 回答的是具体时间。 基础题 3 答案：B 解析：How often 是固定搭配，问频率。不能用 What 或 When。 提升题 1 答案：B 解析：Lily 是第三人称单数，用 Does 提问。How often does Lily take out the rubbish? 提升题 2 答案：B 解析：三次是 three times，week 前要有 a。Three times a week 正确。 提升题 3 答案：C 解析：A 和 B 都正确。She cooks every day. 和 She often cooks. 都回答了频率问题。 拓展题 1 答案：B 解析：Twice a month 是频率，对应 How often 的提问。What do you do 问的是做什么事。 拓展题 2 答案：B 解析：Olivia and Bella 是复数，用 do。They do chores every day. 正确。 拓展题 3 答案：B 解析：he 是第三人称单数，用 does 提问，后面动词用原形 feed。How often does he feed the dog? 考点九：help 的用法 基础题 1 答案：A 解析：help sb. do sth. 结构，用动词原形 cook。help Mum cook dinner。 基础题 2 答案：A 解析：help sb. do sth.，用动词原形 sweep。help me sweep the floor。 基础题 3 答案：A 解析：help sb. with sth. 是固定搭配。help Dad with the chores。 提升题 1 答案：A 解析：help sb. with sth. 表示"帮助某人做某事"。help her brother with his homework。 提升题 2 答案：A 解析：help sb. do sth.，用动词原形 clean。help them clean the house。 提升题 3 答案：A 解析：Olivia 是第三人称单数，help → helps。help sb. do sth.，用 make。 拓展题 1 答案：C 解析：help sb. do sth. 中 do 用原形，不能用 to cooking。正确：help me cook / help me with cooking。 拓展题 2 答案：A 解析：Zhang Hao 是第三人称单数，help → helps。help sb. do sth.，用 wash。 拓展题 3 答案：B 解析：help sb. do sth. 用动词原形 sweep。A 中 with sweep 错误（应为 with sweeping）。 考点十：综合语境运用 基础题 1 答案：C 解析：具体时间点前用介词 at。at 5:30 / at six o'clock。 基础题 2 答案：B 解析：on a farm 是固定搭配，表示"在农场"。 基础题 3 答案：A 解析：tidy up the table 和 wash the dishes 是并列动作，用 and 连接。 提升题 1 答案：B 解析：on weekends 是固定搭配，表示"在周末"。注意介词用 on。 提升题 2 答案：C 解析：前半句说工作辛苦，后半句说很开心，是转折关系，用 but。 提升题 3 答案：A 解析：after school 是固定搭配，表示"放学后"。 拓展题 1 答案：B 解析：Luke 是第三人称单数，live → lives。on a farm 是固定搭配（不用 in）。 拓展题 2 答案：A 解析：get the table ready 是固定短语，表示"摆好餐桌"。she 用 gets。 拓展题 3 答案：A 解析：be ill in bed 是固定搭配，表示"生病卧床"。用介词 in。 — 科普版五年级上册英语 Unit 3 专项训练 完 — — 第 页 — 学科网（北京）股份有限公司 $