Unit 4 第2课时 Reading time & Project（教学课件）英语沪教版五四制三年级上册（新教材）

该小学英语课件围绕“Water”主题，核心知识点包括水的三态（固态、液态、气态）及其转化条件，核心词汇如cloud、rain、ice等，核心句型“This is...”“It comes from...”“When it is hot/cold, water becomes...”。课堂导入通过图片问答（如Where does ice come from?）引导学生联系水的来源与形态转化，搭建新旧知识衔接的学习支架。 其亮点在于融合语言能力与思维品质培养，通过实验观察（描述冰与热水现象）、实验报告填写（区分标注水的三态）及生活联系（举例日常三态变化）等任务型活动，提升学生语言表达与科学分析能力。采用情境教学与合作游戏（如“水的三态”猜谜），小结清晰列出核心单词句型，既帮助学生巩固知识，也为教师提供结构化、多样化的教学资源。

Unit 4 Water Reading time & Project 沪教版五四制三上·新教材 能听懂、认读并理解核心词汇，如：water, ice, water vapour, lake, river, sea, cloud, rain, snow 等。 能理解水的三种形态（固态、液态、气态）及其相互转化的基本条件（加热/遇冷）。 能理解水在自然界中的存在形式及其分布，并能读懂教材中关于水循环的简单描述。 能用 “It comes from ...” 和 “It is ...” 等句型描述水的来源与状态。 能观察实验图示（如冰与热水），并能用 “Look at Picture..., This is ...” 等句型口头描述实验现象。 能完成实验报告（Lab report）的书面填空，并能结合图片信息对水、水蒸气、冰进行区分与标注。 能联系生活实际，举例说明日常生活中水的三态变化现象。 能结合四季特征，简单描述不同季节里水的存在形式及天气特点。 能运用所学句型，尝试独立完成一份简单的科学实验小报告，并进行口头展示。 核心词汇：become, cloud, rain, snow, ice, cold, when, hot 核心句型：This is ... It comes from the ... When it is hot/cold, water becomes ... Contents Lead-in 1 Practice 3 Homework 5 Presentation 2 Summary 4 01 Lead-in Lead-in Look at the pictures. Where does it come from? Let’s ask and answer. Ask and answer Lead-in Ask and answer Where does ice come from? It comes from water vapour and water. Lead-in Ask and answer Where does water vapour come from? It comes from water. Lead-in Ask and answer Where do clouds come from? They come from water vapour. 02 Presentation Meet new words. become 【词性】动词 【例句】I want to become a doctor. 我想成为一名医生。 【用法】表示"变成、成为"，后接名词或形容词 变成 /bɪˈkʌm/ Vocabulary Meet new words. cloud 【词性】名词 【短语】white cloud 白云 【例句】Look at the white cloud in the sky. 看天空中的白云。 【用法】可数名词，复数为clouds 云；云朵 /klaʊd/ Vocabulary Meet new words. rain 【词性】名词 【短语】heavy rain 大雨 【例句】I don’t like walking in the rain. 我不喜欢在雨中走路。 【用法】不可数名词，表示"雨水" 雨；雨水 /reɪn/ Vocabulary Meet new words. snow 【词性】名词 【短语】white snow 白雪 【例句】The snow is very beautiful. 雪很美丽。 【用法】不可数名词，表示"雪" 雪 /snəʊ/ Vocabulary Meet new words. ice 【词性】名词 【短语】ice cream 冰淇淋 【例句】I like to eat ice cream in summer. 夏天我喜欢吃冰淇淋。 【用法】不可数名词，表示"冰" 冰 /aɪs/ Vocabulary Meet new words. cold 【词性】形容词 【短语】cold water 冷水 【例句】Put on your coat, it’s cold outside. 穿上外套，外面很冷。 【拓展】反义词——cold（冷的）↔ hot（热的）。 寒冷的；冷的 /kəʊld/ Vocabulary Meet new words. when 【词性】副词 【例句】When do you go to school? 你什么时候去上学？ 【用法】疑问副词，用于询问时间 【拓展】联想——when（什么时候）↔ what time（几点）——都问时间。 什么时候；何时 /wen/ Vocabulary Meet new words. hot 【词性】形容词 【短语】hot water 热水 【例句】It’s very hot in summer. 夏天很热。 【用法】形容词，描述高温 【拓展】反义词——hot（热的）↔ cold（冷的）。 温度高的；热的 /hɒt/ Vocabulary become cloud rain cold snow hot when ice Listen and read Where is water? Listen and read Let’s play Let’s play Where is water? It’s in rivers. Let’s play Where is water? It’s in seas. Let’s play Where is water? It’s in clouds. Let’s play Where is water? It’s in lakes. Think and speak Look at the picture. Where is the water vapour, water and ice? Look and write What I see: water vapour water vapour hot water Show and tell What I find: 03 Practice 描述事物的句型 “This is...” 和 “It is...” Look at Picture A. This is ice. In Picture B, this is water. This is water vapour. It is hot. Language points 我们用 This is... 来介绍离我们较近的某一样东西（单数）。 用 It is...（缩写 It's...）来继续描述刚才提到的那样东西，说明它的样子、温度或状态。 Language points 句型 结构 例句 介绍 This is + 单数名词. This is ice. (这是冰。) 描述 It is + 形容词/名词. It is cold. (它是冷的。) 否定 It is not (isn't) + ... It isn't hot. (它不热。) 一般现在时第三人称单数 “becomes” When it is hot, water becomes water vapour. When it is cold, water vapour becomes water. When it is very cold, water becomes ice. Language points becomes 是动词 become（变成）的第三人称单数形式。 当主语是 he / she / it 或单数名词（如 water, ice, water vapour）时，动词后面要加 -s 或 -es。 这里主语都是 water 或 water vapour（不可数名词，视为单数），所以用 becomes。 Language points 肯定句 主语（单数）+ becomes + 表语（名词/形容词）. 否定句 主语 + does not (doesn't) + become + ...（注意变回原形） 例句 Water becomes ice. (水变成冰。) 例句 Water vapour doesn't become ice easily. (水蒸气不容易变成冰。) 特殊疑问句 “Where is...?” 及介词 “in” / “from” Where is water? Water is in lakes, rivers and seas. It comes from the ...  Language points Where is...? 用来询问某物或某人在哪里。回答时常用 It's in/on/under... 或 It comes from...（来自）。 本课主要用 in 表示“在……里面/之中”（如 in lakes），用 from 表示“从……来”（如 from the water）。 Language points 问句 Where is + 单数名词/不可数名词? 回答 It's + 介词短语. (in / from / on 等) 例句 Where is the ice? – It's in the fridge. 例句 Where is water vapour? – It comes from the hot water. 介词填空，可用 in / from / on）： 1.Water is ______ lakes and rivers. 2.The vapour comes ______ the water. 3.Ice is ______ the cold place. 4.Snow is ______ the tree. 5. – Where is the water? – It's ______ the cup. in Choose and write from in from in  1.is / This / ice / . → ________________________________ 2.hot / It / is / . → ________________________________ 3.water / is / This / vapour / . → ________________________________ 4.cold / is / It / not / . → ________________________________ 5.picture / at / Look / A / . → ________________________________ This is ice. Make sentences It is hot. This is water vapour. It is not cold. Look at picture A. 04 Summary become, cloud, rain, snow, ice, cold, when, hot This is ... It comes from the ... When it is hot/cold, water becomes ... 05 Homework 跟读“Reading time”关于水的变化的句子3遍，模仿语音语调；用核心句型“When it is hot/cold/very cold, water becomes ...”写2句话，描述水在不同温度下的变化。 观察家中的水，用英文完成一份简单的“My lab report”实验报告，写出“What I see”和“What I find”。 和家人玩“水的三态”猜谜游戏。用英文描述一种水的形态，让对方猜是water、water vapour还是ice，记录下对方的回答。 Bye-bye! 沪教版五四制三上·新教材 Blues 3108.575 Blues 3030.2073 Blues 3030.2073 Blues 3317.5554 Blues 3056.3298 Blues 3030.2073 Blues 3317.5554 Blues 3056.3298 Blues 20610.615 Blues 26697.285 $Cloud. cloud. Hot, hot. Ice. ice. Where is water? We see . water everywhere. Water is in lakes, rivers and seas. Water is in the air, clouds, rain and snow. When . when. Rain, rain. When IT is hot, water becomes water vapor. When IT is cold, water vapor becomes water. When IT is very cold, water becomes ice. Look at the picture. Where is the water vapor? Water and eyes. Cold, cold. Become . become. Reading time. where is . water? We see . water everywhere. Water is in lakes, rivers and seas. Water is in the air, clouds, rain and snow. When IT is hot, water becomes water vapor. When IT is cold, water vapor becomes water. When IT is very cold, water becomes ice. Look at the picture. Where is the water vapor, water and eyes. Snow, snow.