Unit 2 Helping others at school Story time 知识点讲解（同步练）-2025-2026学年译林版（三起）英语四年级下册

新译林版4B Unit 2 Helping others at school Story time 知识点讲解（同步练） 1. 原句：Here's your book. 知识点讲解 这是倒装句，正常语序为 Your book is here.，口语中常用，用于递东西给对方。 here's = here is，后接单数名词/不可数名词；复数名词用 here are。 同义表达：This is your book. / Your book is here. 同步选择题 ( ) 1. ______ your pen. A. Here's B. Here are C. Here is' ( ) 2. ______ your books. A. Here's B. Here are C. Here is ( ) 3. —Here's your ruler. —______ A. Thank you. B. You're welcome. C. That's right. ( ) 4. Here ______ a dog and two cats. A. is B. are C. am ( ) 5. —Here's your schoolbag. —______ A. No, it isn't. B. Thank you. C. Yes, it is. 2. 原句：Thanks. I want to take these books to the library. 知识点讲解 thanks = thank you，口语化感谢表达。 固定搭配：want to do sth. 想要做某事，to 后接动词原形。 固定搭配：take sth. to + 地点 把某物带到某地；take 表“带去”，区别于 bring（带来）。 these 这些，后接复数名词，对应单数 this。 同步选择题 ( ) 1. I want ______ to the park. A. go B. to go C. going ( ) 2. Please take these books ______ the classroom. A. in B. on C. to ( ) 3. —______ —You're welcome. A. Hello B. Thanks C. Goodbye ( ) 4. I want ______ my homework to my teacher. A. take B. to take C. taking ( ) 5. ______ pens are new. A. This B. These C. That 3. 原句：I can help you. But where's the library? I'm new here. 知识点讲解 can 是情态动词，后接动词原形，表“能够、可以”。 where's = where is，用于询问单数物品/地点的位置；复数用 where are。 new here 新来的，here 是副词，前面不加介词。 同步选择题 ( ) 1. I ______ help you with your English. A. can B. am C. is ( ) 2. —______ the library? —It's near the playground. A. Where B. Where's C. Where are ( ) 3. He is new ______ our school. A. in B. at C. / ( ) 4. —______ your books? —They're on the desk. A. Where's B. Where are C. Where ( ) 5. She ______ swim very well. A. can B. is C. are 4. 原句：It's on the first floor. Come with me. 知识点讲解 表示“在某楼层”用介词 on，结构：on the + 序数词 + floor。 first 是序数词“第一”，对应基数词 one；常见序数词：second(2nd)、third(3rd)。 固定搭配：come with sb. 和某人一起走，with 表“和…一起”。 同步选择题 ( ) 1. The library is ______ the first floor. A. in B. on C. at ( ) 2. Let's go to the ______ (第二) floor. A. two B. second C. three ( ) 3. Come ______ me, please. A. with B. and C. for ( ) 4. My classroom is on the ______ floor. A. one B. first C. a ( ) 5. —Where is the art room? —It's ______ the second floor. A. in B. on C. at 5. 原句：I'm Yang Ling. Welcome. 知识点讲解 welcome 可作感叹词（欢迎）、形容词（受欢迎的）、动词（欢迎），口语中单独使用表“欢迎”。 常用搭配：Welcome to + 地点 欢迎来到某地（如 Welcome to our school.） 同步选择题 ( ) 1. ______ to our school! A. Welcome B. Thank C. Hello ( ) 2. —I'm new here. —______ A. Thank you. B. Welcome. C. You're welcome. ( ) 3. Welcome ______ my home. A. to B. in C. at ( ) 4. —Welcome to our class. —______ A. Thank you. B. You're welcome. C. That's right. ( ) 5. You are ______ in our class. A. welcome B. thank C. hello 6. 原句：I'm Nancy. Our school is so big. 知识点讲解 our 是形容词性物主代词“我们的”，后接名词；对应 my(我的)、your(你的/你们的)。 so 是副词，表“如此、这么”，修饰形容词/副词（如 so big、so happy）。 同步选择题 ( ) 1. ______ school is very beautiful. A. We B. Our C. Us ( ) 2. The park is ______ big. A. so B. many C. a ( ) 3. This is ______ new classroom. A. we B. our C. us ( ) 4. I am ______ happy today. A. so B. many C. a ( ) 5. —______ classroom is clean. —Yes, it is. A. We B. Our C. Us 7. 原句：I can show you around. 知识点讲解 固定搭配：show sb. around 带某人参观，sb. 用宾格（you、me、him 等）。 同步选择题 ( ) 1. Let me show you ______. A. around B. to C. for ( ) 2. I can show ______ around our school. A. he B. him C. his ( ) 3. —Can you show me around? —______ A. Yes, I can. B. Yes, I do. C. Yes, I am. ( ) 4. She will show ______ around the museum. A. we B. our C. us ( ) 5. Let's show the new student ______. A. to B. around C. for 8. 原句：Thanks. You're so kind. 知识点讲解 kind 作形容词，表“善良的、好心的”，用于夸赞他人；也可作名词“种类”。 常用同义句：You're so kind. = It's very kind of you. 你真是太好了。 同步选择题 ( ) 1. You are so ______. Thank you. A. kind B. bad C. tall ( ) 2. —You're so kind. —______ A. Thank you. B. You're welcome. C. That's right. ( ) 3. It's very kind ______ you. A. of B. for C. to ( ) 4. She is a ______ girl. A. kind B. bad C. tall ( ) 5. —Thank you for your help. —You're so ______. A. bad B. kind C. tall 9. 原句：Let's go to the art room first. It's on the first floor too. 知识点讲解 let's = let us，后接动词原形，用于提建议“让我们做某事”。 first 作副词，表“首先”；也可作序数词“第一”。 too 作副词，表“也”，用于肯定句句末；否定句用 either。 同步选择题 ( ) 1. Let's ______ to the park. A. go B. to go C. going ( ) 2. Let's do our homework ______. A. one B. first C. two ( ) 3. I like apples. I like bananas, ______. A. too B. either C. also ( ) 4. —Let's go to the library. —______ A. Thank you. B. Great. C. You're welcome. ( ) 5. He can swim. I can swim, ______. A. either B. too C. also 10. 原句：Great. Are there any computer rooms in our school? 知识点讲解 there be 句型的一般疑问句：Are there...? 用于询问“某地有某物吗？”，肯定回答 Yes, there are.，否定回答 No, there aren't.。 any 用于疑问句/否定句，肯定句用 some。 computer room 是复合名词，变复数时只变后面的名词：computer rooms。 同步选择题 ( ) 1. —______ any computer rooms in your school? —Yes, there are. A. Is there B. Are there C. There are ( ) 2. There are ______ books in the library. A. any B. some C. a ( ) 3. —Are there any art rooms? —______ A. Yes, there is. B. No, there aren't. C. No, there isn't. ( ) 4. Are there ______ music rooms in your school? A. any B. some C. a ( ) 5. There ______ two computer rooms on the third floor. A. is B. are C. am 11. 原句：Yes, there are. They're on the third floor. We can go there later. 知识点讲解 they're = they are，指代复数名词（如 computer rooms）。 third 是序数词“第三”，对应基数词 three。 later 是副词，表“稍后、之后”，常用 see you later 回头见。 同步选择题 ( ) 1. The computer rooms are on the ______ floor. A. three B. third C. two ( ) 2. —Where are the classrooms? —______ on the second floor. A. They're B. It's C. There are ( ) 3. Let's go to the park ______. A. late B. later C. early ( ) 4. —See you later. —______ A. Hello. B. Goodbye. C. Thank you. ( ) 5. My home is on the ______ floor. A. three B. third C. two 12. 原句：The music room is on the third floor too. 知识点讲解 music room 是复合名词“音乐室”，复数形式：music rooms。 同步选择题 ( ) 1. The ______ is on the third floor. A. music room B. musics room C. music rooms ( ) 2. There are two ______ in our school. A. music room B. music rooms C. musics rooms ( ) 3. —Where is the music room? —______ A. It's on the third floor. B. They're on the third floor. C. Yes, it is. ( ) 4. I like the ______ very much. A. music room B. musics room C. music rooms ( ) 5. The music room is on the ______ floor too. A. three B. third C. two 13. 原句：Is there a piano? 知识点讲解 there be 句型的一般疑问句：Is there...? 用于单数/不可数名词，肯定回答 Yes, there is.，否定回答 No, there isn't.。 同步选择题 ( ) 1. —______ a piano in the music room? —Yes, there is. A. Is there B. Are there C. There is ( ) 2. —Is there a library in your school? —______ A. Yes, there are. B. No, there isn't. C. No, there aren't. ( ) 3. There ______ a piano in the room. A. is B. are C. am ( ) 4. —Is there a book on the desk? —______ A. Yes, it is. B. Yes, there is. C. No, it isn't. ( ) 5. ______ a football in the playground? A. Is there B. Are there C. There is 14. 原句：Yes, there is. 知识点讲解 there be 句型的肯定回答，对应 Is there...? 的提问。 同步选择题 ( ) 1. —Is there a classroom on the first floor? —______ A. Yes, there is. B. No, there are. C. Yes, it is. ( ) 2. —Is there a library? —______ A. No, there is. B. Yes, there is. C. Yes, it is. ( ) 3. —Is there a music room? —______ A. No, there isn't. B. Yes, there are. C. No, it isn't. ( ) 4. There ______ a book in my bag. A. is B. are C. am ( ) 5. —Is there a computer in the room? —______ A. Yes, there are. B. No, there isn't. C. No, it isn't. 15. 原句：Right. Thank you for showing me around. 知识点讲解 固定搭配：Thank you for doing sth. 感谢你做某事，for 是介词，后接动名词（doing形式）。 同步选择题 ( ) 1. Thank you for ______ me. A. help B. helping C. to help ( ) 2. Thank you for ______ me around. A. show B. showing C. to show ( ) 3. —Thank you for your help. —______ A. You're welcome. B. Thank you. C. That's right. ( ) 4. Thank you for ______ to my party. A. come B. coming C. to come ( ) 5. Thank you for ______ my book. A. find B. finding C. to find 16. 原句：Our classrooms are here on the second floor. 知识点讲解 classroom 是名词“教室”，复数形式：classrooms。 second 是序数词“第二”，对应基数词 two。 同步选择题 ( ) 1. Our ______ are on the second floor. A. classroom B. classrooms C. classroomes ( ) 2. The library is on the ______ floor. A. two B. second C. three ( ) 3. —Where are the classrooms? —______ A. It's on the second floor. B. They're on the second floor. C. Yes, they are. ( ) 4. My classroom is on the ______ floor. A. two B. second C. three ( ) 5. There are many ______ in our school. A. classroom B. classrooms C. classroomes 17. 原句：You're welcome. 知识点讲解 用于回应感谢，表“不客气”；同义表达：That's all right. / Not at all. / It's my pleasure. 同步选择题 ( ) 1. —Thank you. —______ A. Thank you. B. You're welcome. C. That's right. ( ) 2. —Thanks a lot. —______ A. Not at all. B. Thank you. C. That's right. ( ) 3. —Thank you for your help. —______ A. It's my pleasure. B. Thank you. C. That's right. ( ) 4. —You're welcome. —______ A. Thank you. B. You're welcome. C. That's right. ( ) 5. —Thank you very much. —______ A. That's all right. B. Thank you. C. That's right. 答案及详细解析 知识点1 1. A 解析：pen是单数，用Here's（Here is的缩写）。 2. B 解析：books是复数，用Here are。 3. A 解析：别人递东西给你，用Thank you回应。 4. A 解析：there be句型遵循“就近原则”，a dog是单数，用is。 5. B 解析：别人递书包给你，用Thank you回应。 知识点2 1. B 解析：固定搭配want to do sth.，to后接动词原形go。 2. C 解析：固定搭配take sth. to + 地点，表“把某物带到某地”。 3. B 解析：回应You're welcome的是感谢，选Thanks。 4. B 解析：固定搭配want to do sth.，to后接动词原形take。 5. B 解析：pens是复数，用These修饰；This/That修饰单数名词。 知识点3 1. A 解析：can是情态动词，后接动词原形help，表“能够”。 2. B 解析：library是单数，用Where's（Where is的缩写）提问位置。 3. C 解析：new here是固定表达，here是副词，前面不加介词。 4. B 解析：books是复数，用Where are提问位置。 5. A 解析：can是情态动词，后接动词原形swim，表“能够”。 知识点4 1. B 解析：表示“在某楼层”用介词on，固定搭配on the first floor。 2. B 解析：“第二”用序数词second，基数词two表“两个”。 3. A 解析：固定搭配come with sb.，表“和某人一起走”。 4. B 解析：表示“在某楼层”用序数词，first是“第一”。 5. B 解析：表示“在某楼层”用介词on，固定搭配on the second floor。 知识点5 1. A 解析：固定搭配Welcome to + 地点，表“欢迎来到某地”。 2. B 解析：别人说自己是新来的，用Welcome回应。 3. A 解析：固定搭配Welcome to + 地点，表“欢迎来到某地”。 4. A 解析：别人欢迎你，用Thank you回应。 5. A 解析：You are welcome in our class. 表“欢迎你来到我们班”。 知识点6 1. B 解析：our是形容词性物主代词，后接名词school，表“我们的学校”。 2. A 解析：so是副词，修饰形容词big，表“如此大”。 3. B 解析：our是形容词性物主代词，后接名词new classroom，表“我们的新教室”。 4. A 解析：so是副词，修饰形容词happy，表“如此开心”。 5. B 解析：our是形容词性物主代词，后接名词classroom，表“我们的教室”。 知识点7 1. A 解析：固定搭配show sb. around，表“带某人参观”。 2. B 解析：show后接宾格，him是he的宾格。 3. A 解析：Can you...?的肯定回答是Yes, I can. 4. C 解析：show后接宾格，us是we的宾格。 5. B 解析：固定搭配show sb. around，表“带某人参观”。 知识点8 1. A 解析：You're so kind. 是固定夸赞语，表“你真是太好了”。 2. A 解析：别人夸赞你，用Thank you回应。 3. A 解析：固定搭配It's very kind of you.，表“你真是太好了”。 4. A 解析：kind修饰girl，表“善良的女孩”。 5. B 解析：You're so kind. 是固定夸赞语，回应别人的帮助。 知识点9 1. A 解析：let's后接动词原形，固定搭配let's do sth.。 2. B 解析：first作副词，表“首先”，句意为“先做作业”。 3. A 解析：too用于肯定句句末，表“也”；either用于否定句。 4. B 解析：别人提建议Let's...，用Great回应表示赞同。 5. B 解析：too用于肯定句句末，表“也”。 知识点10 1. B 解析：computer rooms是复数，用Are there提问。 2. B 解析：肯定句用some，疑问句/否定句用any。 3. B 解析：Are there...?的否定回答是No, there aren't. 4. A 解析：疑问句用any，肯定句用some。 5. B 解析：two computer rooms是复数，用are。 知识点11 1. B 解析：表示“在第三层”用序数词third，基数词three表“三个”。 2. A 解析：classrooms是复数，用They're（They are的缩写）指代。 3. B 解析：later表“稍后”，句意为“我们稍后去公园”。 4. B 解析：See you later. 是告别语，用Goodbye回应。 5. B 解析：表示“在第三层”用序数词third。 知识点12 1. A 解析：is是单数，用music room（单数）；musics是错误形式。 2. B 解析：two后接复数，music room的复数是music rooms。 3. A 解析：music room是单数，用It's on the third floor. 回答。 4. A 解析：the后接单数music room，表“这个音乐室”。 5. B 解析：表示“在第三层”用序数词third。 知识点13 1. A 解析：a piano是单数，用Is there提问。 2. B 解析：Is there...?的否定回答是No, there isn't. 3. A 解析：a piano是单数，用is。 4. B 解析：Is there...?的肯定回答是Yes, there is. 5. A 解析：a football是单数，用Is there提问。 知识点14 1. A 解析：Is there...?的肯定回答是Yes, there is. 2. B 解析：Is there...?的肯定回答是Yes, there is. 3. A 解析：Is there...?的否定回答是No, there isn't. 4. A 解析：a book是单数，用is。 5. B 解析：Is there...?的否定回答是No, there isn't. 知识点15 1. B 解析：for是介词，后接动名词helping。 2. B 解析：for是介词，后接动名词showing。 3. A 解析：回应感谢用You're welcome。 4. B 解析：for是介词，后接动名词coming。 5. B 解析：for是介词，后接动名词finding。 知识点16 1. B 解析：are是复数，用classrooms（classroom的复数）。 2. B 解析：表示“在第二层”用序数词second，基数词two表“两个”。 3. B 解析：classrooms是复数，用They're on the second floor. 回答。 4. B 解析：表示“在第二层”用序数词second。 5. B 解析：many后接复数，用classrooms。 知识点17 1. B 解析：回应感谢用You're welcome。 2. A 解析：Not at all. 是You're welcome. 的同义表达，回应感谢。 3. A 解析：It's my pleasure. 是You're welcome. 的同义表达，回应感谢。 4. A 解析：别人说You're welcome，用Thank you回应。 5. A 解析：That's all right. 是You're welcome. 的同义表达，回应感谢。 学科网（北京）股份有限公司 $