Unit 3 第2课时 Reading time & Project（分层作业）英语沪教版五四制四年级上册（新教材）

**基本信息** 分层清晰，从词汇到语篇递进，适配新授课巩固需求，助力语言能力与思维品质提升。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础练|核心词汇（near/thick等）、基础语法（冠词/不定式等）|首字母填空强化词汇记忆，单选聚焦语法规则，单一知识点夯实基础| |提升练|词汇运用、句型转换（提问/否定等）、情景对话|选词填空深化词汇辨析，句型转换训练语言灵活运用，补全对话提升交际能力| |拓展练|语篇理解、信息提取、逻辑判断|短文阅读结合环保主题，判断正误培养信息甄别能力，渗透文化意识与社会责任感|

Unit 3 Animals and their homes 第2课时Reading time & Project 基础练 Ⅰ.Read and write (根据首字母提示完成单词) 1.Polar bears live n_______ the North Pole. 2.They have t_______ fur to keep warm in cold days. 3.Polar bears are good s_______. They like swimming in cold water. 4.They c_______ seals and fish for their food. 5.Now the ice is m_______ because the weather gets warmer. Ⅱ.Read and choose（读一读，选出正确的答案） ( )1. Polar bears live near _______ North Pole. A. a B. an C. the ( )2. They have thick fur _______ warm. A. keep B. to keep C. keeping ( )3. —_______ do polar bears eat?—Seals and fish. A. What B. Where C. When ( )4. Now the ice and snow are _______. A. melt B. melting C. melts ( )5. There _______ lots of snow near the North Pole. A. is B. are C. am Ⅲ. Fill in the blanks with the given words in their proper forms (用所给单词适当形式填空) 1.Polar bears _______ (be) great swimmers. 2.They like _______ (swim) in the cold water. 3.Lots of ice and snow _______ (be) around the North Pole. 4.The area is getting _______ (warm), so ice melts. 5.They catch _______ (seal) and fish for food. 提升练 Ⅳ.Read and choose. (选择合适的单词补全句子) thick catch swim near difficult 1.Polar bears live _______ the North Pole. 2.They have _______ fur to keep warm. 3.They can _______ very well in cold water. 4.They _______ seals and fish for food. 5.For polar bears, life can be very _______ when ice melts. Ⅴ. Rewrite the sentences. (按要求完成句子) 1. Polar bears live near the North Pole.（对划线部分提问） _______ _______ polar bears live? 2. They catch seals and fish for food.（改为一般疑问句） _______ they _______ seals and fish for food? 3. They have thick fur.（改为否定句） They _______ _______ thick fur. 4. Polar bears are great swimmers.（改为同义句） Polar bears _______ _______ _______ swimming. 5. The ice is melting.（改为一般疑问句） _______ the ice _______? Ⅵ.Read and choose(从方框选择句子补全对话，有一项多余) A. What do they eat? B. Where do polar bears live? C. Can they swim? D. Do they like hot weather? E. What colour are pandas? Tom: Hi, Amy. Let’s talk about polar bears. Amy: OK! 1.____ Tom: They live near the North Pole. Amy: 2.____ Tom: They eat seals and fish. Amy: 3.____ Tom: Yes, they are very good swimmers. Amy: 4.____ Tom: No, they don’t. They like cold places. 拓展练 Ⅶ.Read and judge（根据短文内容，判断正 (T) 误 (F)。) Polar bears Polar bears live near the North Pole. It is very cold there. They have thick white fur. It helps them keep warm. Polar bears are good swimmers. They swim in cold water and catch seals and fish for food. But now the world is getting warmer. The ice and snow melt. Polar bears lose their home. Their life becomes hard. We need to do something to help them. ( )1. Polar bears live near the South Pole. ( )2. Polar bears have thick fur. ( )3. Polar bears can swim very well. ( )4. They eat grass and leaves. ( )5. Warmer weather makes polar bears’ life difficult. 答案与解析 I. Read and write (根据首字母提示完成单词) 1.near 解析：near 介词，意为 “在…… 附近”。句意：北极熊居住在北极附近。 2. thick 解析：thick 形容词，“厚的”；thick fur 厚厚的皮毛。句意：寒冷天气里，它们有厚厚的皮毛来保暖。 3. swimmers 解析：swimmer 游泳者；主语 Polar bears 是复数，所以 swimmer 变复数swimmers。句意：北极熊是很棒的游泳健将，它们喜欢在冷水里游泳。 4. catch 解析：catch 动词，“捕捉”；主语 they，一般现在时用动词原形。catch seals 捕捉海豹。 5. melting 解析：现在进行时结构：be + doing；melt（融化）变动名词 melting。句意：因为天气变暖，冰正在融化。 II. Read and choose（读一读，选出正确的答案） 1.C 解析：North Pole（北极）是世界上独一无二的专有地理名词，前面必须加定冠词the。 2. B 解析：to do 不定式表目的；have thick fur to keep warm 有厚厚的皮毛（目的）用来保暖。 3. A 解析：答句是 Seals and fish（海豹和鱼，食物），对事物提问用疑问词What什么；Where 哪里，When 何时。 4. B 解析：be + doing 现在进行时，are melting 正在融化。 5. A 解析：there be 句型，snow 是不可数名词，be 动词用is。 III. Fill in the blanks with the given words in their proper forms (用所给单词适当形式填空) 1.are 解析：主语 Polar bears 是复数，be 动词用 are。 2. swimming 解析：固定搭配 like doing sth. 喜欢做某事，like swimming 喜欢游泳。 3. is 解析：lots of ice and snow，ice 是不可数名词；there be 遵循就近原则，ice 不可数，be 动词用 is。 4. warmer 解析：get + 比较级，表示 “变得更……”；get warmer 变得更暖和。 5. seals 解析：and 并列后面 fish，这里用复数表一类动物，seal 复数 seals。 IV. Read and choose.(选择合适的单词补全句子) 1.near 句意：北极熊住在北极附近。 2. thick 句意：它们有厚厚的皮毛用来保暖。 3. swim 情态动词 can 后面接动词原形 swim。句意：它们能在冷水里游得很好。 4. catch 句意：它们捕捉海豹和鱼当作食物。 5. difficult 句意：当冰融化的时候，北极熊的生活会非常艰难。 V. Rewrite the sentences. (按要求完成句子) 1.Where do polar bears live? 解析：划线部分 near the North Pole 是地点，对地点提问用 Where；主语 polar bears 复数，助动词用 do。 2.Do they catch seals and fish for food? 解析：实义动词 catch，主语 they 复数，变一般疑问句用助动词 Do 放句首，后面动词变回原形 catch。 3.They don’t have thick fur. 解析：have 实义动词，主语 they 复数，否定用 don’t + 动词原形 have。 4.Polar bears are good at swimming. 解析：be good at doing sth. 擅长做某事；= be great swimmers 是很棒的游泳者。 5.Is the ice melting? 解析：现在进行时的一般疑问句，把 be 动词 is 提前，动词保持 melting。 VI.Read and choose (从方框选择句子补全对话，有一项多余) 1.B 解析：答句 “They live near the North Pole.” 回答居住地点，问句询问居住地点。 2. A 解析：答句 “They eat seals and fish.” 回答吃的食物，问句问吃什么。 3. C 解析：答句 “Yes, they are very good swimmers.” 是 can 引导一般疑问句的肯定回答，询问会不会游泳。 4. D 解析：答句 “No, they don’t.” 是 Do 引导一般疑问句的否定回答。 VII.Read and judge（根据短文内容，判断正 (T) 误 (F)。） 1.F 解析：原文 Polar bears live near the North Pole. 北极熊住在北极附近，不是 South Pole 南极。 2. T 解析：原文 They have thick white fur. 它们有厚厚的白色皮毛。 3. T 解析：原文 Polar bears are good swimmers. 北极熊很擅长游泳。 4. F 解析：原文 catch seals and fish for food，吃海豹和鱼，不是 grass and leaves 草和树叶。 5. T 解析：原文 the world is getting warmer…Their life becomes hard. 气候变暖让北极熊生活变得艰难 2 / 2 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $