Unit 2 Helping at home（期中知识清单）四年级英语上学期（外研版三起·新教材）

知识清单·外研版三起四年级上学期（新教材） Unit 2 Helping at home 知识梳理 知识点拨 【考点一】表达请求的句型 【考点二】礼貌地询问某人能做某事的句型 【考点三】 need to的用法 【考点四】can和may用法总结 考点一：表达请求的句型 【课文原句】Dad, may I play outside?爸爸，我可以出去玩吗？ 【句型结构】May I+动词原形(+其他)? 【重点讲解】 · 此句型是以may开头的一般疑问句，用于表达自己请求，征求对方的意见情态动词may意为可以，后接动词原形，没有人表和数的变化； · 肯定回答常用Yes./Sure./Of course.；否定回答用Sorry/No, you can't. 【例句】—May I go to the park on Saturday, Mum?我星期六可以去公园吗,妈妈? —Sure.当然。 【大显身手】 选择题。 ( ) 1．—________ I help you clean the classroom? —Sure, thank you! A．Do B．May C．Am ( ) 2．—________ I go out to play? —Yes, you can. A．May B．Do C．Am ( ) 3．________ I play outside? A．Do B．Am C．May ( ) 4．—________ I have a look? —Sure. A．may B．My C．May ( ) 5．—________ I ________ to Lily? —Sorry, she is not in. A．May; speak B．Must; speak C．May; speaking 考点二：礼貌地询问某人能做某事的句型 【课文原句】—Can you tidy your room? 你能整理你的房间吗？ —OK. 好的。 【句型结构】Can you+动词原形(+其他)? 【重点讲解】 · 在表达请求时，还可在句尾加上please，并用号同句子其他成分隔开，使得语气更加委婉。 · 【知识回顾】我们在Unit 1学习过该句型用于询问对方是否有能力做某事的用法，Can you jump high, Daming?大明，你能跳得高吗？ 此处用于表达请求对方做某事。 · 情态动词can在此处意为“能,可以”，表示请求，没有人称和数的变化，后面接动词原形 · 肯定回答常用“OK!/Sure!/No problem!”等；否定回答常用“Sorry,…”，可简单说明原因。 【例句】—Can you teach me English?你能教我英语吗? —No problem.没问题。 【大显身手】 选择题。 ( ) 1．—________ I use your bike? —Certainly. A．Do B．Can C．Am ( ) 2．—________ I play football with you? —Yes, you can. A．Do B．Am C．Can ( ) 3．—________ I have some milk? —Yes, you ________. A．Do; can B．Can; can C．Am; are ( ) 4．—________ I play with the toy cat?    —Sure. A．What B．When C．Can ( ) 5．—________ you pick an apple ________ me? —Sure. A．Can; for B．Are; for C．Are; to 考点三：need to的用法 【课文原句】I need to clean the floor. 我需要打扫地板。 【句型结构】主语 + need to + 动词原形 + 其他. 【重点解析】 · “need to do sth.” 表示 “需要做某事”，其中 “need” 是实义动词，有人称、数和时态的变化。 · 主语通常是人，强调某人自身有做某事的需求。 例：She needs to finish her homework before dinner.（她需要在晚饭前完成作业。） Do you need to buy some milk?（你需要买些牛奶吗？） 【大显身手】 选择题。 ( ) 1．We need ________ things on time. A．does B．to do C．doing ( ) 2．They need to ________ the dog. A．feed B．eat C．drink ( ) 3．My sister ________ to water the flowers now. It’s going to rain soon. A．needs B．needn’t C．doesn’t need ( ) 4．—I need to buy some clothes. Let’s ________. —OK. A．go swimming B．go shopping C．go on a picnic ( ) 5．Daming ________ toothache. He needs to see a doctor. A．have a B．has a C．have an 考点四：can和may用法总结 一、情态动词的特点： · can 和 may 后面接动词原形 · 没有人称和数的变化 · 否定形式：can/may+not+动词原形 二、常见情态动词的用法： can (1) 能够，会（表能力）； (2) 可以（表请求、允许，此时与 may 意思相近，语气更委婉客气）； (3) 可能（表可能性，用于客观的推测）。例：Can it be him? 会是他吗？ may (1) 可以（表示请求、许可）； (2) 可能（表示可能性，表示不太有把握的推测）。例：He may be late. 他可能会迟到。 含情态动词 can 与 may 的句型结构： 一般疑问句：Can/May + 主语 + 动词原形 (+ 其他)? 肯定回答：Yes, 主语 + can.Yes, 主语 + may./Sure./OK./Yes, please. 否定回答：No, 主语 + can't.No, 主语 + may not./No, 主语 + can't.(大多口语上用)/ No, 主语 + mustn't.(具有强烈禁止的意思)/ No, you'd better not. 例句：—Can you sing? —Yes, I can./—No, I can't. —May I go out? —Yes, you may./OK.—No, you can't./ No, you mustn't. 【大显身手】 选词填空。 1． (May / What) I go outside to play? 2． (Must / May) I ask you a question? 3．— (Can / May) I have a book? —Yes, you may. 4． (Do / Can) you tell me the way to the library? 5． (Do / Can) I have some juice, please? 综合训练 一、选择与所给单词划线部分发音相同的单词。 ( ) 1．work A．water B．yard C．feed ( ) 2．yard A．yes B．wash C．vegetables ( ) 3．we A．you B．water C．sweep ( ) 4．you A．yard B．work C．feed 二、选词填空。 1．Bobby can do (chore / chores) well. 2．—Can you help me clean the floor?    —Yes, I (can / can’t). 3．Amy (do / does) a lot of things to help her family. 4．We’re good (helper / helpers) to Mum and Dad. 5．I take care (for / of) my grandma. 三、单选题。 ( ) 1．—Can I play outside? —No, you ______. A．may not B．can’t C．don’t ( ) 2．It’s warm inside. You can ______ your coat. A．take off B．put on C．take up ( ) 3．We often ______ the eggs on the farm. A．collect B．collects C．collecting ( ) 4．He ______ his room every day. A．clean B．cleans C．cleaning ( ) 5．—Can you help me with my English? —______. A．No problem B．Yes, I do C．No, I’m not ( ) 6．My mother is busy. She has a lot of ______ to do. A．chore B．chores C．chore’s ( ) 7．She can’t ______ the box. It’s too heavy. A．carry B．carries C．carrying ( ) 8．I sometimes feel ______ after a long walk. A．tired B．tire C．tiring ( ) 9．My father often ______ the grass in the garden. A．cut B．cuts C．cutting ( ) 10．I’m tired. I want to ______ a rest. A．have B．has C．having 四、【新考法·待办清单】Sam把需要做的家务列成清单。根据提示，选词补全家务清单上的家务。 wash make water take out sweep feed 五、选择合适答句。 A．I can tidy the desk. B．Well done! C．Yes. I need to tidy my room. D．Sure. E．I need to clean the floor. ( ) 1．Sam, are you still busy? ( ) 2．What can you do? ( ) 3．My room is clean now. ( ) 4．What do you need to do? ( ) 5．May I play outside? 六、连词成句。 1．grass, can, I, cut, the (.) 2．tired, sometimes, my, feels, mum (.) 3．family, happy, my, I’m, up, to, warm (.) 4．farm, help, on, you, me, can, the (?) 5．tidy, your, room, can, first, you (?) 七、补全对话。 A．Do you like helping at home? B．What are you doing? C．Let’s play basketball this afternoon. D．What’s your favorite sport? E．What about you? A: Hi, Linda! 1. B: I’m doing my homework. What about you? A: I’m helping my mom wash the dishes. 2. B: Yes, I do. I often clean my room. A: 3. B: My favorite sport is swimming. 4. A: I like playing basketball. 5. B: Good idea! Let’s go after finishing homework. 八、【新语篇·绘本阅读】阅读绘本，选择正确的答案。 We use machines at home every day. They help us a lot! We wash clothes with a washer. Put in dirty clothes’ and laundry detergent. Then it cleans them. We dry things with a dryer. Wet clothes go in. Then they come out dry. We freeze food with a freezer. Put food in it. It keeps food cold. We make dinner with a stove. Put a pan on it. Then we can cook. We make the cake with a mixer. Put ingredients in a bowl. The mixer mixes them. We make a milk shake with a blender. Put fruit and milk in it. It makes a nice drink. What machines do you use every day? They make our lives easier! ( ) 1．How many machines are mentioned(提及到)? 词汇积累: laundry detergent洗衣液; dry使……变干; freeze冷冻; cold冷的; pan平底锅; ingredients原料; mix混合; easier更简单的 A．Six. B．Seven. C．Eight. ( ) 2．I want to __________. I can use A．make dinner B．make the cake C．make a milk shake ( ) 3．I can use __________ to freeze food. A． B． C． ( ) 4．From the passage, we know that __________. A．machines aren’t helpful B．machines can make chores difficult C．technology creates a better life 九、【新情境·历史人物】阅读短文，选择正确答案。 In ancient China, there was a kind man called Huang Xiang. When he was a child, his father was often ill. His mother passed away early. Huang Xiang took care of his father carefully. In summer, he used a fan to cool the bed for his father. In winter, he warmed the bed with his own body. People all said he was a filial(孝顺的) and helpful child. ( ) 1．Where is the story from? A．Modern America. B．Ancient China. C．Ancient England. ( ) 2．What happened to Huang Xiang’s mother? A．She was ill. B．She passed away early. C．She was busy. ( ) 3．How did Huang Xiang help his father in summer? A．He warmed the bed. B．He used a fan to cool the bed. C．He cooked for his father. ( ) 4．People thought Huang Xiang was ______. A．filial and helpful B．tired and warm C．old and busy 参考答案 【考点一】 1．B 2．A 3．C 4．C 5．A 【考点二】 1．B 2．C 3．B 4．C 5．A 【考点三】 1．B 2．A 3．C 4．B 5．B 【考点四】 1．May 2．May 3．May 4．Can 5．Can 【综合训练】 一、选择与所给单词划线部分发音相同的单词。 1．A 2．A 3．B 4．A 二、选词填空。 1．chores 2．can 3．does 4．helpers 5．of 三、单选题。 1．B 2．A 3．A 4．B 5．A 6．B 7．A 8．A 9．B 10．A 四、【新考法·待办清单】Sam把需要做的家务列成清单。根据提示，选词补全家务清单上的家务。 1．make 2．wash 3．feed 4．water 5．sweep 6．take out 五、选择合适答句。 1．C 2．A 3．B 4．E 5．D 六、连词成句。 1．I can cut the grass. 2．Sometimes my mum feels tired. 3．I'm happy to warm up my family. 4．Can you help me on the farm? 5．Can you tidy your room first? 七、补全对话。 1．B 2．A 3．D 4．E 5．C 八、【新语篇·绘本阅读】阅读绘本，选择正确的答案。 1．A 2．B 3．B 4．C 九、【新情境·历史人物】阅读短文，选择正确答案。 1．B 2．B 3．B 4．A 第1页，共3页 学科网（北京）股份有限公司 $