Unit 2 Helping others at school Cartoon 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4B Unit 2 Helping others at school Cartoon time 知识点讲解与同步练习 1. Sam, is there a swing in our new playground? 知识点1：there be句型的一般疑问句（单数） 结构：Is there + 单数名词 + 地点状语?，用于询问某地是否有某物。 回答：肯定回答 Yes, there is.；否定回答 No, there isn't. 易错点：区分 there be（表存在）和 have/has（表拥有），不能混用。 ( ) 1. —______ a library in your school? —Yes, ______. A. Is there; there is B. Are there; there are C. Has there; it has ( ) 2. —Is there a football in the box? —______ A. Yes, it is. B. No, there isn't. C. No, it isn't. ( ) 3. —______ a swing in the park? A. Have B. Are there C. Is there ( ) 4. —Is there a bird in the tree? —______ A. Yes, there are. B. No, there isn't. C. No, there aren't. ( ) 5. —______ a new classroom in your school? —Yes, there is. A. Are there B. Is there C. Have there 知识点2：swing的词性与用法 名词：swing /swɪŋ/ n. 秋千；摆动，复数形式 swings 动词：swing v. 摇摆；荡秋千 常见搭配：on the swing 在秋千上；play on the swing 荡秋千 ( ) 1. There is a ______ in the playground. Let's play on it. A. swing B. swings C. swinged ( ) 2. —What can you see in the park? —I can see two ______. A. swing B. swings C. swinging ( ) 3. Bobby likes ______ on the swing. A. play B. plays C. playing ( ) 4. The little girl is ______ on the swing happily. A. swing B. swings C. swinging ( ) 5. —Is there a ______ in your new playground? —Yes, there is. A. swing B. swings C. swinged 2. Yes, there is. Let's go and have a look. 知识点1：Let's句型的用法 结构：Let's = Let us + 动词原形，用于提出建议，意为“让我们做某事”。 回答：常用 Good idea! / Great! / OK! 表示同意。 易错点：Let's 包含说话人，Let us 不包含听话人，需注意区分。 ( ) 1. ______ go and have a look at the new park. A. Let B. Let's C. Lets ( ) 2. —Let's play football after school. —______ A. Thank you. B. Good idea! C. You're welcome. ( ) 3. Let's ______ to the zoo this Sunday. A. go B. goes C. going ( ) 4. ______ help Bobby with his homework. A. Let we B. Let us C. Let's we ( ) 5. —Let's go and play on the swing. —______ A. No, I don't. B. Great! C. Yes, I do. 知识点2：have a look的固定搭配 固定短语：have a look 看一看，相当于 take a look 用法：后接宾语时需加 at，即 have a look at sth. 同义表达：look at sth. ( ) 1. Let's go and ______ at the new picture. A. have a look B. have look C. has a look ( ) 2. —Can I ______ your new toy car? —Sure. A. have a look B. have a look at C. look ( ) 3. There is a new shop. Let's go and ______. A. have a look B. have look C. has a look ( ) 4. —______ at my new dress. —It's beautiful! A. Have a look B. Have a look at C. Have look ( ) 5. Let me ______ your new schoolbag. A. have a look B. have a look at C. look 3. The swing is great! 知识点1：形容词great的用法 形容词：great /ɡreɪt/ adj. 极好的；伟大的；棒的 用法：可修饰名词，也可单独使用表示赞叹，相当于 wonderful / excellent 常见搭配：have a great time 玩得开心 ( ) 1. The new swing is ______. I like it very much. A. great B. well C. badly ( ) 2. —Let's go to the park. —______! A. Great B. Bad C. Terrible ( ) 3. We have a ______ time at the party. A. great B. well C. badly ( ) 4. —How is your new school? —It's ______. A. great B. goodly C. badly ( ) 5. The film is ______. Let's watch it again. A. great B. well C. bad 4. Let's go and play! 知识点1：and连接并列动词的用法 结构：动词原形 + and + 动词原形，用于连接两个并列的动作，时态、形式保持一致。 例句：go and play 去玩；come and see 来看 易错点：and 前后动词形式必须统一，不能出现一原一现/一现-ing的情况。 ( ) 1. Let's go and ______ football. A. play B. plays C. playing ( ) 2. Come and ______ my new friend. A. meet B. meets C. meeting ( ) 3. Let's go and ______ a look at the new classroom. A. has B. have C. having ( ) 4. Run and ______ with your brother. A. jump B. jumps C. jumping ( ) 5. Let's go and ______ the swing. A. play B. plays C. playing 5. Now Bobby is on the swing. 知识点1：现在进行时的用法 结构：主语 + be动词(am/is/are) + 动词-ing形式 + 其他，表示现在正在进行的动作。 本句：Bobby is on the swing 表状态，也可表达为 Bobby is playing on the swing（动作） 易错点：动词-ing形式的变化规则（直接加-ing、去e加-ing、双写尾字母加-ing） ( ) 1. Look! Bobby ______ on the swing. A. play B. is playing C. plays ( ) 2. —What ______ you doing now? —I ______ reading a book. A. are; am B. is; am C. are; is ( ) 3. My sister ______ in the park now. A. is running B. runs C. run ( ) 4. —Is Sam playing football? —______ A. Yes, he is. B. Yes, he does. C. No, he isn't. ( ) 5. Listen! The birds ______ in the tree. A. sing B. are singing C. sings 6. Be careful, Bobby. 知识点1：祈使句的用法（表提醒/警告） 结构：Be + 形容词 + 其他 / 动词原形 + 其他，用于表示命令、提醒、警告。 本句：Be careful 小心，相当于 Look out! / Watch out! 否定形式：Don't + 动词原形，如 Don't run! 不要跑！ ( ) 1. ______! The bus is coming. A. Be careful B. Careful C. Be carefully ( ) 2. ______ quiet in the library. A. Be B. Are C. Is ( ) 3. —______! There is a hole in the ground. —Thank you. A. Look at B. Look out C. Look for ( ) 4. ______ run in the classroom. A. Not B. Don't C. No ( ) 5. ______ careful when you cross the road. A. Be B. Are C. Is 7. Go! Go! Go! 知识点1：祈使句的用法（表鼓励/催促） 结构：动词原形 + 其他，用于表示鼓励、催促、命令，语气强烈。 本句：Go! 加油！冲！是口语中常用的鼓励语。 常见用法：Come on! 加油；Hurry up! 快点 ( ) 1. ______! You can win the game. A. Go B. Goes C. Going ( ) 2. —______! We are late. —OK, I'm coming. A. Hurry up B. Be careful C. Look out ( ) 3. ______ on! Let's finish the work quickly. A. Come B. Comes C. Coming ( ) 4. ______! The bus is leaving. A. Hurry up B. Be quiet C. Be careful ( ) 5. —______! You can do it. —Thank you. A. Go B. Goes C. Going 8. Are you OK? 知识点1：日常交际用语Are you OK? 用法：用于询问对方身体状况、是否安好，相当于 Are you all right? 回答：Yes, I'm OK. / No, I'm not. / I feel dizzy. 等 拓展：Is he/she OK? 询问他人状况 ( ) 1. —Are you OK? —______ I feel a little tired. A. Yes, but B. No, and C. Yes, and ( ) 2. —______ —I'm fine, thank you. A. Are you OK? B. How old are you? C. What's your name? ( ) 3. —Is Bobby OK? —______ He feels dizzy. A. Yes, but B. No, he isn't C. Yes, he is ( ) 4. —Are you OK? —______ I hurt my leg. A. Yes, I am B. No, I'm not C. Yes, but ( ) 5. —______ —No, I feel sick. A. Are you OK? B. How are you? C. What's the matter? 9. Yes, but I feel dizzy ... 知识点1：feel的用法（感官系动词） 感官系动词：feel /fiːl/ v. 感觉；觉得，后接形容词作表语。 本句：feel dizzy 感到头晕，dizzy /ˈdɪzi/ adj. 头晕的 常见搭配：feel happy 感到开心；feel cold 感到冷；feel tired 感到累 ( ) 1. I ______ dizzy after playing on the swing. A. feel B. feels C. feeling ( ) 2. —How do you ______? —I feel hot. A. feels B. feel C. feeling ( ) 3. Bobby ______ dizzy after playing on the swing. A. feel B. feels C. feeling ( ) 4. I don't ______ well today. A. feel B. feels C. feeling ( ) 5. —Do you ______ tired? —Yes, I do. A. feel B. feels C. feeling 10. It's time for Art. 知识点1：It's time for...的用法 结构：It's time for + 名词/名词短语，意为“到做某事的时间了”。 同义结构：It's time to + 动词原形，如 It's time for Art = It's time to have Art class. 易错点：区分 for + 名词 和 to + 动词原形，不能混用。 ( ) 1. It's time ______ Art class. A. for B. to C. at ( ) 2. It's time ______ have lunch. A. for B. to C. at ( ) 3. —It's time for PE. —______ A. Let's go to the playground. B. Let's go to the art room. C. Let's go to the library. ( ) 4. It's time ______ school. A. to B. for C. at ( ) 5. It's time ______ read books. A. for B. to C. at 11. Let's go to the art room. 知识点1：go to + 地点的用法 结构：go to + 地点名词，意为“去某地”。 特殊情况：地点为副词时省略 to，如 go home / go there / go here 常见搭配：go to school 去上学；go to the park 去公园；go to the zoo 去动物园 ( ) 1. Let's go ______ the art room. A. to B. / C. for ( ) 2. It's time for PE. Let's go ______ the playground. A. / B. to C. for ( ) 3. Let's go ______ home now. A. to B. / C. for ( ) 4. I want to go ______ the park with my friends. A. to B. / C. for ( ) 5. Let's go ______ there by bus. A. to B. / C. for 12. Let me help you. 知识点1：Let sb. do sth.的用法 结构：Let + 宾语(me/him/her/them) + 动词原形，意为“让某人做某事”。 本句：Let me help you. 让我帮你，help /help/ v. 帮助 易错点：Let 后必须接动词原形，不能接to do或doing形式。 ( ) 1. Let me ______ you. A. help B. helps C. helping ( ) 2. Let him ______ the box for you. A. carry B. carries C. carrying ( ) 3. Let us ______ you with your homework. A. helps B. help C. helping ( ) 4. Let her ______ you find your pen. A. helps B. helping C. help ( ) 5. Let me ______ you carry the bag. A. help B. helps C. helping 13. Thank you! 知识点1：日常交际用语Thank you!的用法 用法：用于表达感谢，相当于 Thanks! / Thank you very much! 回答：常用 You're welcome. / Not at all. / That's all right. 拓展：Thanks a lot. 非常感谢；Thank you for your help. 谢谢你的帮助 ( ) 1. —Let me help you. —______ A. You're welcome. B. Thank you! C. That's OK. ( ) 2. —Thank you very much. —______ A. Thank you. B. You're welcome. C. That's all right. ( ) 3. —Thanks a lot. —______ A. Not at all. B. Thank you. C. That's OK. ( ) 4. —Thank you for your help. —______ A. You're welcome. B. Thank you. C. That's right. ( ) 5. —Let me carry your bag. —______ A. You're welcome. B. Thank you! C. That's all right. 参考答案 1. Sam, is there a swing in our new playground? 知识点1 1.A 2. B 3. C 4. B 5. B 知识点2 1.A 2. B 3. C 4. C 5. A 2. Yes, there is. Let's go and have a look. 知识点1 1.B 2. B 3. A 4. B 5. B 知识点2 1.A 2. B 3. A 4. B 5. B 3. The swing is great! 知识点1 1.A 2. A 3. A 4. A 5. A 4. Let's go and play! 知识点1 1.A 2. A 3. B 4. A 5. A 5. Now Bobby is on the swing. 知识点1 1.B 2. A 3. A 4. A 5. B 6. Be careful, Bobby. 知识点1 1.A 2. A 3. B 4. B 5. A 7. Go! Go! Go! 知识点1 1.A 2. A 3. A 4. A 5. A 8. Are you OK? 知识点1 1.A 2. A 3. A 4. B 5. A 9. Yes, but I feel dizzy ... 知识点1 1.A 2. B 3. B 4. A 5. A 10. It's time for Art. 知识点1 1.A 2. B 3. A 4. B 5. B 11. Let's go to the art room. 知识点1 1.A 2. B 3. B 4. A 5. B 12. Let me help you. 知识点1 1.A 2. A 3. B 4. C 5. A 13. Thank you! 知识点1 1.B 2. B 3. A 4. A 5. B 学科网（北京）股份有限公司 $