Unit 5 Fun Science单元知识总结及重点易错（专项训练）-2026-2027学年重大版英语六年级上册

**基本信息** 该专项聚焦六年级上册Unit 5核心知识，以十大易错考点为纲，通过基础-提升-拓展三级训练（90题）系统强化语言能力，解析提炼实用解题方法，逻辑清晰。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |十大易错考点|每考点9题（基础×3+提升×3+拓展×3）|因果问答（Why-Because）、can表能力、三单变化规则等|从词汇（自然现象/机械/植物）到短语、句型，再到语法（连词/感官动词等），结合科学主题形成应用链|

重大版六年级上册 · Unit 5 Fun Science 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。 ■ 一、重点单词（Word Bank） 【自然现象】 rainbow（彩虹） dew drops（露珠） shadow（影子） melting snow（融雪） sunlight（阳光） air（空气） 【简单机械】 seesaw（跷跷板） simple machine（简单机械） board（木板） force（力） wind（风） 【植物生长】 seed（种子） root（根） leaf / leaves（叶） flower（花） fruit（果实） soil（土壤） sprout（发芽） 【其他名词】 pot（花盆） bee（蜜蜂） apple（苹果） superpower（超能力） diary（日记） 【形容词/动词】 wet（湿的） brown（棕色的） excited（兴奋的） change（变化） melt（融化） catch（抓住） push（推） ■ 二、重点短语（Key Phrases） 01. in the sky（在天空中） 02. break sunlight into different colours（把阳光分解成不同颜色） 03. dew drops on the grass / leaves（草叶上的露珠） 04. turn into（变成） 05. an example of a simple machine（一种简单机械的例子） 06. push down（向下推） 07. go up into the air（升到空中） 08. have superpowers（有超能力） 09. change colour（改变颜色） 10. a pair of chopsticks / scissors（一双筷子 / 一把剪刀） 11. pick up food（夹起食物） 12. put ... into a pot（把……放进花盆里） 13. drink water with roots（用根吸水） 14. make food with sunlight（用阳光制造食物） 15. become taller and taller（变得越来越⾼） 16. have more and more leaves（有越来越多的叶⼦） 17. be interested in / enjoy science（对科学感兴趣） ■ 三、重点句型（Key Sentences） ★ — Why can we see a rainbow? — Because it's raining and the sun is also shining. ▸ 考点提示：用 Why 提问原因，用 Because 回答 ★ — Why can we see dew drops in the morning? — Because at night the air cools down. ▸ 考点提示：询问并解释自然现象的原因 ★ The raindrops in the air break sunlight into different colours. ▸ 考点提示：break ... into ... 把……分解成…… ★ You push down one end of the board and the other end goes up. ▸ 考点提示：描述简单机械的工作原理 ★ I am a seed. Today, Xiaoxiao put me into a pot. ▸ 考点提示：用第一人称日记体描述植物生长 ★ My leaves help me (to) make food with the sunlight. ▸ 考点提示：help sb. (to) do sth. 帮助某人做某事 ★ They become taller and taller. They have more and more leaves. ▸ 考点提示：比较级叠加表"越来越……" ■ 四、重点语法（Grammar Focus） 1. Why + 一般疑问句 + Because 回答 ▸ Why can we see a rainbow? — Because the raindrops break sunlight. 2. can / can't 表能力 ▸ A pair of chopsticks can pick up food. The seesaw can lift a child up. 3. 一般现在时第三人称单数动词变化 ▸ The seed drinks water. 以 -s, -sh, -ch 结尾加 -es 4. 名词复数不规则变化 ▸ leaf → leaves；potato → potatoes；tomato → tomatoes；child → children 5. 形容词比较级叠加 ▸ taller and taller（越来越⾼）；more and more leaves（越来越多的叶⼦） 6. 连词 and / but / so / because ▸ and 并列；but 转折；so 结果；because 原因。because 不与 so 连用。 7. 感官动词 + 形容词 ▸ look（看起来）sound（听起来）feel（感觉）smell（闻起来）taste（尝起来）+ adj. 8. help 的用法 ▸ help sb. (to) do sth. 帮助某人做某事；help with + 名词 9. turn into / change into 的转变 ▸ The water in the air turns into little water drops. 强调状态变化 10. 现在进行时（描述正在发生的科学现象） ▸ The snow is melting. The birds are flying. 结构：am/is/are + doing 十大易错考点专项训练（共90题 · 全部选择题） ◇ 基础题（蓝） ▷ 提升题（红） ★ 拓展题（紫） ◆ 考点一：Why/Because 因果问答句型 ◇ 基础题（选择题） （　）1. — _________ can we see a rainbow in the sky? — Because it's raining and the sun is also shining. A. What B. Why C. Where D. How （　）2. — Why do we see dew drops in the morning? — _________ the air cools down at night. A. So B. And C. Because D. But （　）3. — _________ does the seed miss the sun on rainy days? — Because it needs sunlight to make food. A. What B. Why C. Where D. How ▷ 提升题（选择题） （　）1. Olivia asked, "Why _________ the apple's colour change?" Papa Bear said, "Because the air changes it." A. do B. does C. is D. are （　）2. — Why can a kite fly in the sky? — _________ the wind lifts it up. A. So B. And C. Because D. But （　）3. Jam didn't know why the snow _________ melting. Zhou Kai told him it was because of the sun. A. is B. was C. are D. were ★ 拓展题（选择题） （　）1. — Why are there so many clouds today? — _________ the water in the air turns into little drops. A. So B. Because of C. Because D. And （　）2. Chen Wei asked Lily _________ she liked science so much. She said, "Because it's fun to learn about nature." A. what B. why C. where D. how （　）3. — Why don't the children go out to play? — _________ it's raining heavily outside. A. So B. And C. But D. Because ◆ 考点二：can / can't 表能力与客观可能性 ◇ 基础题（选择题） （　）1. A pair of chopsticks _________ pick up food easily. A. is B. are C. can D. does （　）2. The seesaw _________ lift a child up into the air. A. can B. is C. does D. are （　）3. Olivia _________ swim very well, so she practises every day. A. can B. can't C. isn't D. doesn't ▷ 提升题（选择题） （　）1. — Can the wind lift a kite up into the sky? — Yes, it _________. A. can B. is C. does D. will （　）2. The raindrops in the air _________ break sunlight into different colours. A. can B. is C. are D. does （　）3. Little Bear _________ push the board down because he is too light. A. can B. can't C. is D. isn't ★ 拓展题（选择题） （　）1. — _________ Chen Wei and Jam fly kites in the park yesterday? — No, they _________. It was too windy. A. Can; can't B. Could; couldn't C. Do; don't D. Are; aren't （　）2. Bella said she _________ see the rainbow clearly because it was too far away. A. can B. can't C. could D. couldn't （　）3. If the sun is shining and it is raining at the same time, we _________ see a rainbow. A. can B. can't C. isn't D. doesn't ◆ 考点三：一般现在时第三人称单数动词变化 ◇ 基础题（选择题） （　）1. The seed _________ water with its roots every day. A. drink B. drinks C. drinking D. is drink （　）2. Lily often _________ her diary about the tomato plant. A. write B. writes C. writing D. is write （　）3. Zhang Hao _________ science because it is interesting. A. like B. likes C. is like D. are like ▷ 提升题（选择题） （　）1. The tomato plant _________ taller and taller in the sunshine. A. grow B. grows C. growing D. are grow （　）2. Olivia _________ the leaves help the plant make food. A. think B. thinks C. is think D. are think （　）3. Jam _________ the shadow is changing because the sun is moving. A. notice B. notices C. is notice D. are notice ★ 拓展题（选择题） （　）1. Neither Chen Wei nor his brother _________ much about how raindrops break sunlight. A. know B. knows C. is know D. are know （　）2. Everyone in Class 3 _________ that melting snow can become water again. A. know B. knows C. are know D. is knowing （　）3. The teacher, together with her students, _________ an experiment about shadows. A. do B. does C. are do D. is doing ◆ 考点四：名词复数不规则变化（leaf→leaves 等） ◇ 基础题（选择题） （　）1. In autumn, the _________ on the trees turn yellow and red. A. leafs B. leaves C. leafes D. leafies （　）2. The tomato plant has more and more _________ now. A. leafs B. leafes C. leaves D. leafies （　）3. There are two _________ in the kitchen. A. potatoes B. potatos C. potatos D. potatos ▷ 提升题（选择题） （　）1. The children in the garden are looking at the _________ on the grass. A. dews B. dew drops C. dew drop D. dews drops （　）2. We saw many different _________ in the sky today. A. colours B. coloures C. colouress D. colourss （　）3. How many _________ does a tomato plant usually have before it grows fruit? A. roots B. rootes C. rootss D. root ★ 拓展题（选择题） （　）1. The scientist told the students that some _________ in the air can break sunlight. A. raindrop B. raindrops C. rain drop D. rains drops （　）2. Chen Wei wrote in his diary about the _________ of the tomato plant. A. changs B. changes C. changess D. chang （　）3. Olivia noticed that the _________ of the seesaw were very smooth. A. board B. boards C. boardes D. boardss ◆ 考点五：连词 and / but / so / because 辨析 ◇ 基础题（选择题） （　）1. The sun is shining _________ it is also raining, so we can see a rainbow. A. and B. but C. so D. because （　）2. Little Bear is light, _________ he can't push the board down. A. and B. but C. so D. because （　）3. The apple is brown _________ its colour changes in the air. A. and B. but C. so D. because ▷ 提升题（选择题） （　）1. Olivia likes science _________ she doesn't like writing diaries. A. and B. but C. so D. because （　）2. It was raining heavily, _________ Jam stayed at home to read about plants. A. and B. but C. so D. because （　）3. The seed has roots _________ it can drink water from the soil. A. and B. but C. so D. because ★ 拓展题（选择题） （　）1. — Why are you late for school? — _________ I missed the early bus, _________ I had to walk. A. Because; so B. Because; and C. So; because D. And; because （　）2. The tomato plant was small _________ first, _________ after a month it grew very tall. A. at; and B. in; but C. at; but D. on; so （　）3. Jam studied hard _________ he wanted to learn more about simple machines. A. and B. but C. so D. because ◆ 考点六：感官动词 look / sound / feel / smell / taste + adj. ◇ 基础题（选择题） （　）1. The music of the wind _________ beautiful when the leaves move. A. looks B. sounds C. feels D. smells （　）2. The apple _________ brown after being in the air for a long time. A. looks B. sounds C. feels D. tastes （　）3. The bed in the tent _________ very comfortable after a long day. A. looks B. sounds C. feels D. smells ▷ 提升题（选择题） （　）1. The flowers in the garden _________ sweet in the morning breeze. A. look B. sound C. feel D. smell （　）2. This tomato _________ delicious. You grew it very well! A. looks B. sounds C. tastes D. feels （　）3. The story about the seesaw _________ very interesting to the children. A. looks B. sounds C. feels D. tastes ★ 拓展题（选择题） （　）1. The sky _________ grey and cloudy, so Olivia took an umbrella. A. looked B. sounded C. felt D. smelt （　）2. The metal board _________ cold in the morning, but warm at noon. A. looked B. sounded C. felt D. tasted （　）3. The soup that Bella made _________ wonderful. Everyone wanted more. A. looked B. sounded C. felt D. smelt ◆ 考点七：help 的用法（help sb. (to) do / help with） ◇ 基础题（选择题） （　）1. The leaves help the plant _________ food with sunlight. A. make B. makes C. making D. is make （　）2. Lily often helps her mum _________ the dishes after dinner. A. wash B. washes C. washing D. is wash （　）3. Jam helped Chen Wei _________ his science project about rainbows. A. with B. for C. to D. at ▷ 提升题（选择题） （　）1. The roots help the seed _________ water from the wet soil. A. drinks B. drink C. drinking D. is drink （　）2. Bella helped her brother _________ his homework yesterday. A. with B. for C. to D. at （　）3. The teacher helps the students _________ understand how shadows work. A. to B. with C. for D. at ★ 拓展题（选择题） （　）1. Olivia is always ready to help others, _________ makes her popular in class. A. that B. which C. who D. what （　）2. The new science book helps students _________ about plants and animals better. A. learn B. learns C. learning D. is learn （　）3. Zhou Kai helped his sister _________ a model of a seesaw for the science fair. A. build B. builds C. building D. is build ◆ 考点八：turn into / change into 表状态变化 ◇ 基础题（选择题） （　）1. At night, the water in the air _________ little water drops. A. turns into B. turn into C. is turn D. are turn （　）2. When the sun shines, the snow _________ water again. A. turns into B. turn into C. is turn D. are turn （　）3. The green tomatoes _________ red when they are ripe. A. turn B. turns C. is turn D. are turn ▷ 提升题（选择题） （　）1. The raindrops in the air break sunlight _________ different colours. A. into B. in C. to D. at （　）2. In autumn, the leaves on the trees _________ yellow and then fall down. A. turn B. turns C. is turn D. are turn （　）3. The apple's colour changed _________ brown after a few days in the air. A. into B. in C. to D. at ★ 拓展题（选择题） （　）1. The seeds that Xiaoxiao planted _________ beautiful tomato plants after three months. A. turned into B. turn into C. is turn into D. are turn into （　）2. When the temperature drops below zero, water _________ ice. A. turn into B. turns into C. is turn D. are turn （　）3. The caterpillar will _________ a butterfly in a few weeks. A. turn into B. turn C. turns D. is turn ◆ 考点九：比较级叠加（taller and taller / more and more） ◇ 基础题（选择题） （　）1. The tomato plant grows _________ and _________ every day. A. tall; tall B. taller; taller C. tallest; tallest D. more tall; more tall （　）2. The plant has _________ and _________ leaves now. A. many; many B. more; more C. much; much D. most; most （　）3. The shadow of the seesaw gets _________ and _________ as the sun moves. A. long; long B. longer; longer C. longest; longest D. more long; more long ▷ 提升题（选择题） （　）1. The weather in Kunming is getting _________ and _________ in spring. A. warm; warm B. warmer; warmer C. warmest; warmest D. more warm; more warm （　）2. The wind blows _________ and _________ in the afternoon. A. strong; strong B. stronger; stronger C. strongest; strongest D. more strong; more strong （　）3. Olivia becomes _________ and _________ at science because she studies hard. A. good; good B. better; better C. best; best D. more good; more good ★ 拓展题（选择题） （　）1. As the tomato plant grows, it gets _________ and _________ sunlight to make food. A. much; much B. more; more C. most; most D. many; many （　）2. The children become _________ and _________ interested in science experiments. A. much; much B. more; more C. most; most D. many; many （　）3. In Xiamen, the wind becomes _________ and _________ during the typhoon season. A. strong; strong B. stronger; stronger C. strongest; strongest D. more strong; more strong ◆ 考点十：现在进行时描述正在发生的科学现象 ◇ 基础题（选择题） （　）1. Look! The snow _________ in the warm sun. A. melts B. is melting C. melt D. are melting （　）2. Listen! The children _________ about how a seesaw works. A. talk B. talks C. are talking D. is talking （　）3. Right now, the raindrops _________ sunlight into different colours. A. break B. breaks C. are breaking D. is breaking ▷ 提升题（选择题） （　）1. At the moment, Olivia _________ a diary about her tomato plant. A. write B. writes C. is writing D. are writing （　）2. Don't go out now. It _________ heavily outside. A. rains B. is raining C. rain D. are raining （　）3. The bees _________ from flower to flower in Bella's garden. A. fly B. flies C. are flying D. is flying ★ 拓展题（选择题） （　）1. — What is happening in the science lab? — The students _________ an experiment about shadows. A. do B. does C. are doing D. is doing （　）2. While Jam _________ the seesaw, his teacher explained how it works. A. pushes B. pushed C. was pushing D. is pushing （　）3. The wind _________ the kites up into the sky while we were watching. A. lift B. lifts C. was lifting D. is lifting 参考答案与详细解析 ◆ 考点一：Why/Because 因果问答句型 答案 ◇ 基础题： （ B ）1. Why 提问原因，Because 回答，固定搭配。 （ C ）2. 回答 Why 提问必须用 Because 开头。 （ B ）3. 询问原因用 Why，答语用 Because。 ▷ 提升题： （ B ）1. 主语 the apple's colour 单数，助动词用 does。 （ C ）2. Why can ...? 回答用 Because + 主语 + 动词。 （ B ）3. 主句 didn't know 是过去时，宾语从句用 was melting 保持一致。 ★ 拓展题： （ C ）1. 后接完整句子用 Because，Because of 后接名词。 （ B ）2. asked 后接宾语从句，根据答语 Because 可知问的是原因。 （ D ）3. Why don't ...? 的否定疑问句也用 Because 回答。 ◆ 考点二：can / can't 表能力与客观可能性 答案 ◇ 基础题： （ C ）1. can + 动词原形，表示"能够"。 （ A ）2. can 表示"能够"，后接动词原形 lift。 （ B ）3. 根据 so she practises 可知她现在还不能游得很好。 ▷ 提升题： （ A ）1. Can 提问，肯定回答用 Yes, it can. （ A ）2. can 表示客观可能性，"能够"分解阳光。 （ B ）3. too light 太轻了，所以推不动，用 can't。 ★ 拓展题： （ B ）1. yesterday 用过去时 Could 提问，否定回答用 couldn't。 （ D ）2. said 是过去时，宾语从句用 couldn't 保持时态一致。 （ A ）3. 阳光和雨同时出现，我们就能够看到彩虹。 ◆ 考点三：一般现在时第三人称单数动词变化 答案 ◇ 基础题： （ B ）1. 主语 the seed 单数，动词加 -s，drink → drinks。 （ B ）2. Lily 第三人称单数，write → writes，以 -e 结尾直接加 -s。 （ B ）3. Zhang Hao 单数，like → likes。 ▷ 提升题： （ B ）1. 主语 plant 单数，grow → grows，以 -ow 结尾直接加 -s。 （ B ）2. Olivia 单数，think → thinks。 （ B ）3. Jam 单数，notice → notices，以 -e 结尾加 -s。 ★ 拓展题： （ B ）1. neither ... nor ... 连接主语时，谓语动词与最近的主语一致，brother 单数用 knows。 （ B ）2. everyone 作主语，谓语动词用单数 knows。 （ B ）3. together with 连接主语时，谓语与前面 the teacher 一致，用 does。 ◆ 考点四：名词复数不规则变化（leaf→leaves 等） 答案 ◇ 基础题： （ B ）1. leaf 复数不规则变化：f → ves，leaves。 （ C ）2. leaf → leaves，以 f 结尾变 ves。 （ A ）3. potato 复数加 -es，potatoes。 ▷ 提升题： （ B ）1. dew drop 露珠，复数 dew drops。 （ A ）2. colour 复数直接加 -s，colours。 （ A ）3. root 复数直接加 -s，roots。 ★ 拓展题： （ B ）1. raindrop 复数 raindrops。 （ B ）2. change 复数 changes，以 e 结尾加 -s。 （ B ）3. board 复数 boards，规则变化加 -s。 ◆ 考点五：连词 and / but / so / because 辨析 答案 ◇ 基础题： （ A ）1. 两个并列事实用 and 连接。 （ C ）2. "轻"导致"推不动"的结果，用 so。 （ D ）3. 解释原因用 because。 ▷ 提升题： （ B ）1. 前后意思转折，用 but。 （ C ）2. 前面是原因，后面是结果，用 so。 （ D ）3. 解释有根的原因，用 because。 ★ 拓展题： （ B ）1. Because 回答原因，and 连接两个并列结果。注意 because 和 so 不能同时用。 （ C ）2. at first 起初；前后对比转折用 but。 （ D ）3. 解释学习努力的原因，用 because。 ◆ 考点六：感官动词 look / sound / feel / smell / taste + adj. 答案 ◇ 基础题： （ B ）1. 音乐"听起来"用 sounds + adj. （ A ）2. 颜色变化"看起来"用 looks + adj. （ C ）3. 触感"摸起来"用 feels + adj. ▷ 提升题： （ D ）1. 花香"闻起来"用 smell + adj. （ C ）2. 食物"尝起来"用 tastes + adj. （ B ）3. 故事"听起来"有趣用 sounds + adj. ★ 拓展题： （ A ）1. 天空"看起来"灰蒙蒙的，用 looked + adj. （ C ）2. 金属触感"摸起来"冷，用 felt + adj. （ D ）3. 汤"闻起来"香用 smelt + adj. ◆ 考点七：help 的用法（help sb. (to) do / help with） 答案 ◇ 基础题： （ A ）1. help sb. (to) do sth.，to 可省略，用动词原形 make。 （ A ）2. help sb. (to) do sth.，用动词原形 wash。 （ A ）3. help sb. with + 名词，表示"帮某人做某事"。 ▷ 提升题： （ B ）1. help sb. (to) do，用动词原形 drink。 （ A ）2. help sb. with + 名词，homework 是名词。 （ A ）3. help sb. to do sth.，understand 是动词，用 to。 ★ 拓展题： （ B ）1. 非限制性定语从句，which 指代前面整件事。 （ A ）2. help sb. (to) do，用动词原形 learn。 （ A ）3. help sb. (to) do，用动词原形 build。 ◆ 考点八：turn into / change into 表状态变化 答案 ◇ 基础题： （ A ）1. 主语 water 不可数，谓语用单数 turns into。 （ A ）2. snow 不可数，谓语用单数 turns into。 （ A ）3. tomatoes 复数，用 turn + 颜色形容词。 ▷ 提升题： （ A ）1. break ... into ... 把……分解成……，固定搭配。 （ A ）2. leaves 复数，turn + 颜色，表变化。 （ A ）3. change into + 颜色/状态，表"变成……"。 ★ 拓展题： （ A ）1. seeds 复数，用 turned into（描述已发生的变化）。 （ B ）2. water 不可数，用 turns into。 （ A ）3. will 后接动词原形，turn into 变成。 ◆ 考点九：比较级叠加（taller and taller / more and more） 答案 ◇ 基础题： （ B ）1. 比较级叠加"越来越……"，taller and taller。 （ B ）2. more and more + 复数名词，表"越来越多的……"。 （ B ）3. longer and longer 越来越长。 ▷ 提升题： （ B ）1. warmer and warmer 越来越暖和。 （ B ）2. stronger and stronger 越来越强。 （ B ）3. good 的比较级是 better，better and better 越来越好。 ★ 拓展题： （ B ）1. more and more + 不可数名词 sunlight。 （ B ）2. more and more + 形容词 interested。 （ B ）3. stronger and stronger 越来越强。 ◆ 考点十：现在进行时描述正在发生的科学现象 答案 ◇ 基础题： （ B ）1. Look! 是现在进行时标志词，snow 不可数用 is melting。 （ C ）2. Listen! 标志词，children 复数用 are talking。 （ C ）3. Right now 此时此刻，用现在进行时 are breaking。 ▷ 提升题： （ C ）1. At the moment 此刻，Olivia 单数用 is writing。 （ B ）2. now 提示正在下雨，it 用 is raining。 （ C ）3. 描述正在发生的动作，bees 复数用 are flying。 ★ 拓展题： （ C ）1. is happening 提示现在进行时，students 复数用 are doing。 （ C ）2. while 引导的时间状语从句，表示过去某个时刻正在进行的动作，用 was pushing。 （ C ）3. while we were watching 过去进行时，主句也用过去进行时 was lifting。 学科网（北京）股份有限公司 $