Unit 4 Water（知识清单）英语沪教版五四制三年级上册（新教材）

Unit 4 Water 单元知识清单 沪教版五四制三年级上册（新教材） 知识归纳 语音 字母 s 在单词中的发音 /s/（Sound: s sea） s /s/：sea（海洋）　snow（雪）　some（一些）　sky（天空）　sweets（糖果） 必记单词 water n. 水 find v. 发现 river n. 河；江 lake n. 湖；湖泊 sea n. 海；海洋 water vapour 水蒸气 from prep. （表示起始点）从……起；（表示来源）来自 little by little 缓慢地；一点一点地 become v. 变成 cloud n. 云；云朵 rain n. 雨；雨水 snow n. 雪 ice n. 冰 water drop 水滴 where adv. 在哪里；到哪里 cold adj. 寒冷的；冷的 when adv. 什么时候；何时 hot adj. 温度高的；热的 常考短语 come from 来自 go up 上升；向上去 in the sky 在天空中 in the air 在空气中 in rivers, lakes and seas 在河流、湖泊和海洋里 on the leaves 在叶子上 ice leaves 冰叶 make plants grow 使植物生长 keep food nice 使食物保持新鲜 hot water 热水 look at 看 play a game 玩游戏 so cold 这么冷 lab report 实验报告 be like ... 像……一样 in nature 在自然界中 必会句型 1. Where does it come from? 它是从哪里来的？ 2. It comes from water vapour and water. 它来自水蒸气和水。 3. Where do the water drops go? 这些水滴去哪里了？ 4. When it is hot, water becomes water vapour. 天气热时，水会变成水蒸气。 5. Water is in lakes, rivers and seas. 水在湖泊、河流和海洋里。 6. I can be rain or snow. 我能变成雨或雪。 核心语法 考点 01 Where does / do ... come from? 询问来源 考点 02 become（becomes）... 变化的表达 考点 03 Where is ...? It’s in ... 方位问答 考点 04 I can be ... 与 can 的用法 知识点拨 考点 01 Where does / do ... come from? 询问来源 Where does it come from? It comes from water vapour and water. 它是从哪里来的？它来自水蒸气和水。 Where do clouds come from? They come from water vapour. 云是从哪里来的？它们来自水蒸气。 Where does / do ... come from? 用来询问事物来自哪里，回答用 It comes from ... 或 They come from ...。 解析：come from 表示“来自”。主语是单数（it, the ice, the rain 等一个事物）时，问句用 does，答句用 It comes ...；主语是复数（clouds, the water drops 等多个事物）时，问句用 do，答句用 They come ...。 一、问句：Where does / do ... come from? 主语是单数时用 does：Where does the ice come from? 冰是从哪里来的？ 主语是复数时用 do：Where do clouds come from? 云是从哪里来的？ 二、答句：It comes from ... / They come from ... It comes from water. 它来自水。 They come from water vapour. 它们来自水蒸气。 It comes from the clouds in the sky. 它来自天上的云。 ⚠ 易错提醒：does 后面接动词原形 come：Where does it come from? (✓) Where does it comes from? (✗)。主语是复数时，答句用 They come ...，不能用 It comes ...。 ✎ 大显身手 一、单项选择 1. —______ does the ice come from? —It comes from water. A. What B. Where C. Who 2. —Where ______ the water vapour come from? —It comes from water. A. do B. is C. does 3. —Where does the cloud come from? —It ______ from water vapour. A. come B. comes C. coming 4. —Where ______ the water drops go? —They go up and become clouds. A. do B. does C. is 5. —Where do they come from? —______ come from water. A. It B. They C. Their 二、给问句选择合适的答句。 A. They come from water vapour. B. They go up and become clouds. C. It comes from water vapour and water. D. It comes from the clouds in the sky. E. It comes from water. 1. —Where does the rain come from? 2. —Where do clouds come from? 3. —Where does the water vapour come from? 4. —Where does the ice come from? 5. —Where do the water drops go? 考点 02 become（becomes）... 变化的表达 When it is hot, water becomes water vapour. 天气热时，水会变成水蒸气。 They become water vapour and go up and become the clouds in the sky. 它们变成水蒸气，向上升，变成天上的云。 become 表示“变成”，后面直接接变化后的东西。 解析：描述水的形态变化用 become。主语是单数（water, the water vapour 等一个事物）时用 becomes，主语是复数（the water drops 等）时用 become，搭配和 It comes / They come 一样。 一、become ... 变成…… Water becomes water vapour. 水变成水蒸气。（water 是单数主语，用 becomes） The water drops become water vapour. 水滴变成水蒸气。（复数主语用 become） 二、When it is ... 描述天气条件 When it is hot, water becomes water vapour. 天气热时，水变成水蒸气。 When it is cold, water vapour becomes water. 天气冷时，水蒸气变成水。 When it is very cold, water becomes ice. 天气非常冷时，水变成冰。 ⚠ 易错提醒：become 后面直接接名词，不加 to：water becomes ice (✓) water becomes to ice (✗)。主语是复数时用 become：The water drops become ... (✓)。 ✎ 大显身手 一、单项选择 1. When it is hot, water ______ water vapour. A. become B. becoming C. becomes 2. The water drops ______ water vapour. A. becomes B. become C. becoming 3. They ______ up and become the clouds in the sky. A. goes B. go C. going 4. When it is very cold, the water in the river ______ ice. A. becomes B. becoming C. become 5. ______ it is cold, water vapour becomes water. A. When B. What C. Where 二、读一读，选出正确的句子。 1. 天气热时，水会变成水蒸气。 A. When it is hot, water becomes water vapour. B. When it is hot, water becomes ice. C. When it is hot, water becomes snow. 2. 天气冷时，水蒸气会变成水。 A. When it is cold, water vapour becomes ice. B. When it is cold, water vapour becomes water. C. When it is cold, water vapour becomes snow. 3. 天气非常冷时，水会变成冰。 A. When it is very cold, water becomes ice. B. When it is very cold, water becomes water vapour. C. When it is very cold, ice becomes water. 4. 水滴会变成水蒸气。 A. The water drops become ice. B. The water drops become water. C. The water drops become water vapour. 5. 它们向上升，变成天上的云。 A. They go up and become the clouds in the sky. B. They go down and become the clouds in the sky. C. They go up and become the rain in the sky. 考点 03 Where is ...? It’s in ... 方位问答 Water is in lakes, rivers and seas. 水在湖泊、河流和海洋里。 There are some water drops on the leaves. 叶子上有一些水滴。 Where is ...? 询问事物在哪里，回答用 It’s in / on ...。 解析：water 表示水这一类事物的整体，作主语时 be 动词用 is；多个事物作主语时用 are。表示“在……里”用 in，表示“在……上面”用 on。 一、Where is ...? 与 It’s in ... —Where is water? —It’s in the river. —水在哪里？—它在河里。 —Where is the water vapour? —It’s in the air. —水蒸气在哪里？—它在空气中。 二、There are some ... on / in ... There are some water drops on the leaves. 叶子上有一些水滴。 There are some clouds in the sky. 天上有一些云。 ⚠ 易错提醒：water 作主语时 be 动词用 is：Water is in the sea. (✓) Water are in the sea. (✗)。主语是复数时，答句用 They’re ...：—Where are the clouds? —They’re in the sky. (✓)。 ✎ 大显身手 一、单项选择 1. —______ is water? —It’s in the river. A. What B. Where C. Who 2. Water ______ in lakes, rivers and seas. A. be B. is C. are 3. —Where is the water vapour? —______ in the air. A. It’s B. They’re C. It 4. There ______ some water drops on the leaves. A. be B. is C. are 5. —Where are the clouds? —______ in the sky. A. It’s B. They’re C. There 二、选出合适的句子补全对话。 1. —______? —It’s in the lake. A. Where is the water? B. What is the water? C. Who is the water? 2. —Where is the water vapour? —______ A. It’s in the air. B. They’re in the air. C. It’s cold today. 3. —______? —They’re in the sky. A. Where is the cloud? B. Where are the clouds? C. What colour is it? 4. —Where is the ice? —______ A. It’s a ball. B. They’re here. C. It’s here. 5. —______? —There are some water drops on the leaves. A. What’s on the leaves? B. Where is the leaf? C. Where are the leaves? 考点 04 I can be ... 与 can 的用法 I can be rain or snow. 我能变成雨或雪。 You can find me in rivers, lakes and seas. 你可以在河流、湖泊和海洋里找到我。 can 后面接动词原形，表示“能；可以”。 解析：在韵句《I’m water》中，水说 I can be ...（我可以变成……）。can 后面接动词原形，表示能做某事或能变成什么。 一、can + 动词原形 I can be rain or snow. 我能变成雨或雪。 You can find me in rivers, lakes and seas. 你可以在河流、湖泊和海洋里找到我。 —Can you see the clouds? —Yes, I can. —你能看见云吗？—是的，我能。 二、or 表示选择 I can be rain or snow. 我能变成雨或雪。 or 表示“或者”，用来连接两个可以任选其一的事物。 ⚠ 易错提醒：can 后面接动词原形：I can be ice. (✓) I can am ice. (✗) I can to be ice. (✗)。 ✎ 大显身手 一、单项选择 1. I’m water. I ______ be rain or snow. A. can B. do C. am 2. I can ______ ice. A. be B. am C. is 3. I can ______ plants grow. A. makes B. make C. making 4. You can ______ me in rivers, lakes and seas. A. finds B. finding C. find 5. —Can you see the clouds? —Yes, I ______. A. can B. do C. am 二、选词填空：从方框中选出正确的单词补全句子（每词限用一次）。 A. find B. can C. be D. or E. make 1. I ______ be rain or snow. 2. I can ______ ice. 3. I can ______ plants grow. 4. You can ______ me in rivers, lakes and seas. 5. I can be rain ______ snow. 参考答案 考点 01 一、B C B A B 二、1-D　2-A　3-E　4-C　5-B 考点 02 一、C B B A A 二、A B A C A 考点 03 一、B B A C B 二、1-A　2-A　3-B　4-C　5-A 考点 04 一、A A B C A 二、1-B　2-C　3-E　4-A　5-D 第页，共页 学科网（北京）股份有限公司 $