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）

期中知识清单·外研版三起四上 Unit 2 Helping at home 考点一：表示请求的句型 考点二：询问某人能做某事的句型 考点三：情态动词can和may用法总结 考点四：need to的用法 考点一：表示请求的句型 Dad, may I play outside?爸爸，我可以出去玩吗？ 【语法要点】 ❶句型结构：May I + 动词原形 + 其他?，用于礼貌地向对方请求许可，意思是 “我可以…… 吗？” ❷may 是情态动词，后面必须接动词原形，没有人称和数的变化。 ❸肯定回答常用Yes./Sure./Of course.；否定回答用Sorry/No, you can’t. ❹同义请求句型：Can I ...?，May I ...? 比 Can I ...? 语气更加委婉、礼貌。 即时练习 单项选择。 ( ) 1．—_______ I play outside? —Yes. A．May B．Am C．Do ( ) 2．—_______ I use your pencil, please? —Sure, here you are. A．May B．Do C．Are ( ) 3．—_______ I help you wash the dishes? —Yes, please. A．May B．Does C．Do ( ) 4．—_______ I help you sweep the floor? —Yes, thank you. A．May B．Do C．Am ( ) 5．You _______ draw a picture. It _______ help you. A．try; hard B．may; may C．remember; try 考点二：询问某人能做某事的句型 —Can you tidy your room? 你能整理你的房间吗？ —OK. 好的。 【语法要点】 ❶句型结构：Can + 主语 + 动词原形 + 其他?，用来询问对方是否有能力做某事，也可用于提出请求。 ❷can 是情态动词，没有人称和数的变化，后面必须接动词原形。 ❸肯定回答：Yes, I can.（是的，我能。） 否定回答：No, I can’t.（不，我不能。） ❹主语可以换成其他人称，如 Can he…? / Can she…? / Can they…?，can 形式不变。 即时练习 单项选择。 ( ) 1．Can you tidy _______ room first? A．you B．your C．yours ( ) 2．Bobby, can you help me _______ the floor? A．clean B．cleans C．cleaning ( ) 3．Can you ______ meals? A．cook B．cooks C．cooking ( ) 4．Can you ______ the dishes? A．wash B．washes C．washing ( ) 5．—Can you clean the desk? —No, _______ A．I can’t. B．I don’t. C．I am not. 考点三：情态动词can和may用法总结 一、情态动词的特点： ❶can 和 may 后面接动词原形； ❷没有人称和数的变化； ❸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。 三、含情态动词 can 与 may 的句型结构： ❶一般疑问句：Can/May + 主语 + 动词原形 (+ 其他)? ❷肯定回答：Yes, 主语 + can./Yes, 主语 + may./Sure./OK./Yes, please. ❸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) 例句：—Can you sing? 你会唱歌吗？ —Yes, I can./—No, I can't. 是的，我会。/不，我不会。 —May I go out? 我能出去吗？ —Yes, you may./OK.是的，你可以。/可以。 —No, you can't./ No, you mustn't. 不，你不能。 即时练习 选词填空。(can / may / need to / needs to / must) 1．It rain this afternoon. Take an umbrella. 2．— I use your pencil? —Sure. 3．My little sister draw nice pictures. 4． you help me, please? 5．We follow the school rules. 6．My mother clean the room every morning. 7．I finish my homework first. 8．You listen carefully in class. 9．The bird find some food. 考点四：need to的用法 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。 1. 核心句型：主语 + need to + 动词原形 例句：I need to clean the room. 我需要打扫房间。 例句：You need to help mum. 你需要帮助妈妈。 例句：He needs to water the flowers. 他需要浇花。 2. 人称变化规则 need 是实义动词，主语不同形式不一样： 主语是 I /you/we /they（复数、你、我）→ 用原形 need 例句：I need to sweep the floor. 我需要扫地。 主语是 he /she/it（第三人称单数）→ 变 needs 例句：She needs to make the bed. 她需要铺床。 3. 否定句：主语 + don’t/doesn’t + need to + 动词原形 例句：I don’t need to wash clothes. 我不用洗衣服。 例句：He doesn’t need to cook. 他不用做饭。 4. 一般疑问句：Do/Does + 主语 + need to + 动词原形？ 例句：—Do you need to help at home? 你需要在家帮忙吗？ —Yes, I do. / No, I don’t. 即时练习 一、单项选择。 ( ) 1．My grandpa _______ need to do heavy work. A．don’t B．doesn’t C．not ( ) 2．—_______ you need to go now? —Yes, I do. A．Do B．Does C．Are ( ) 3．We need to _______ the floor every day. A．sweep B．sweeped C．sweeping ( ) 4．My room is dirty. I need to _______ it. A．tidy B．tidies C．tidying ( ) 5．It’s raining. We need to take our _______. A．glasses B．umbrellas C．sweater 二、选用方框内单词或短语填空。 need to       needs to        must 6．We keep our classroom clean. 7．My sister read books every evening. 8．I finish my homework before watching TV. 9．You listen to the teacher carefully in class. 10．The cat eat some food now. 一、判断下列每组单词中画线部分的发音是(T)否(F)相同。 ( ) 1．word    work ( ) 2．yellow    yard ( ) 3．yes      many ( ) 4．visit      warm ( ) 5．wash    who 二、单项选择。 ( ) 1．I can take care ______ Bobby. A．for B．of C．with ( ) 2．I can help ______ home. A．at B．in C．on ( ) 3．Can you help ______ home? A．at B．in C．on ( ) 4．—Can you help me on the farm? —Sure. I can ______. A．do my homework B．make the beds C．water the vegetables ( ) 5．Look! Your room is ______. Please tidy it. A．clean B．easy C．dirty ( ) 6．—Mum, may I ______? —Yes. But can you help me first? I feel ______ now. A．play outside; easy B．help you; helpful C．play outside; tired ( ) 7．Xiaoming can ______ at home. A．clean the table B．clean the wall C．read books ( ) 8．It’s so ______ now. Let’s ______ your room together. A．dirty; tidy B．clean; tidy C．clean; sweep ( ) 9．—Wenwen is the sunshine of her family. —Yes. She’s happy to ______ her family. A．give up B．turn on C．warm up ( ) 10．What chores can they do? A．They can make the bed. B．They can tidy the room. C．They can clean the desk. 三、根据图片和首字母提示，补全句子。 第1题图 第2题图 第3题图 第4题图 第5题图 1．—Can you cut the g? —Yes, I can. 2．Sam does a good j. 3．Sarah likes milking the c on the farm. 4．Ann can s the floor for her grandpa. 5．Daming does a lot of chores. He is t now. 四、用所给单词的适当形式填空。 1．There are many house (chore) for us to do. 2．He can (sweep) the floor. 3．She can help (he). 4．How many (dish) do we need for dinner? 5．Yuanyuan is helpful. She can (feed) the pigs. 五、给下面的句子选出对应的图片。 A．    B．    C．    D．    E． ( ) 1．Huahua picks the tomatoes. ( ) 2．Yuanyuan milks the cow. ( ) 3．Beibei gets the eggs. ( ) 4．Lili waters the vegetables. ( ) 5．Keke feeds the pigs. 六、选择合适的句子，补全对话。 A．Can you tidy up your toys, please? B．Sure. C．You are helpful! D．Let’s do some chores together. E．Can you water them? Mum: The room is dirty. 1. Tongtong: OK, Mum. What can I do? Mum: 2. Tongtong: Yes, I can. Mum: Can you help me sweep the floor? Tongtong: 3. Mum: The flowers need water. 4. Tongtong: Yes, I can. Mum: 5. 七、假期Lele来到奶奶的农场参观。读一读，判断句子正(T)误(F)。 Look. This is my grandma. She has got a big farm. I like the farm. Many animals are on it. Ilike feeding them. This is a goat (山羊). And that is a cow. They eat grass. They give (给) us milk. They are chickens. They give us eggs. Ilike eggs. They are ducks. They give us eggs, too. They can swim. Look at the pigs. They are fat (胖的). They give us meat (肉). ( ) 1．Lele has a farm. ( ) 2．Goats and cows give us milk. ( ) 3．Pigs are fat. They give us eggs ( ) 4．Lele likes feeding animals. ( ) 5．Ducks can swim. 八、Sam是如何度过充实的一天的呢？读一读，完成下列任务。 Hello! I am Sam. Today is Sunday. I don’t go to school. I get up early. I help my mum sweep the floor and take care of my sister. I cook (烹饪) lunch for my family. And I wash the dishes after lunch. In the afternoon, I play basketball with my friends. I keep playing basketball for four months. I can play basketball well. And I like running, too. Then I go home to eat dinner with my family. It’s a busy but happy day. 1．根据短文内容，按时间顺序用1-5将下列图片排序。 ( ) ( ) ( ) ( ) ( ) 2．根据短文内容，选择正确的答案。 ( ) (1) Today is __________. A．Saturday         B．Sunday         C．Monday ( ) (2) In the morning, I __________. A．pick the apples         B．sweep the floor         C．clean the desk ( ) (3) I keep playing basketball for __________. A．five months         B．four days         C．four months ( ) (4) I __________ after lunch. A．take care of my sister    B．wash the dishes         C．have dinner ( ) (5) I like __________, too. A．playing basketball     B．playing football         C．running 参考答案 【考点一】 1．A 2．A 3．A 4．A 5．B 【考点二】 1．B 2．A 3．A 4．A 5．A 【考点三】 1．may 2．May 3．can 4．Can 5．must 6．needs to 7．need to 8．must 9．needs to 【考点四】 1．B 2．A 3．A 4．A 5．B 6．must 7．needs to 8．need to 9．must 10．needs to 【综合训练】 一、判断下列每组单词中画线部分的发音是(T)否(F)相同。 1．T 2．T 3．F 4．F 5．F 二、单项选择。 1．B 2．A 3．A 4．C 5．C 6．C 7．A 8．A 9．C 10．B 三、根据图片和首字母提示，补全句子。 1． 2． 3． 4． 5． 四、用所给单词的适当形式填空。 1．chores 2．sweep 3．him 4．dishes 5．feed 五、给下面的句子选出对应的图片。 1．E 2．D 3．B 4．A 5．C 六、选择合适的句子，补全对话。 1．D 2．A 3．B 4．E 5．C 七、假期Lele来到奶奶的农场参观。读一读，判断句子正(T)误(F)。 1．F 2．T 3．F 4．T 5．T 八、Sam是如何度过充实的一天的呢？读一读，完成下列任务。 1．5 1 4 3 2 2．B B C B C 第 1 页 共 15 页 学科网（北京）股份有限公司 $