Unit 3 Section Ⅳ Writing（课件PPT）-【优化指导】2024-2025学年新教材高中英语必修第三册（外研版2019）

UNIT 3　The world of science (单元主题语境：人与社会——科技发展和科学精神) Section Ⅳ　Writing 1．写作词汇再现 ①aim 目的；目标 ②result 结果 ③material 材料 ④procedure 步骤，程序，手续 ⑤stage 阶段 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ⑥do/carry out/conduct an experiment 做实验 ⑦draw/come to a conclusion 得出结论 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 2．精彩句式再练 完成句子 ①我非常想知道这个神奇的瓶子会发生什么。 I have an incredible desire to know ________________ to this magic bottle. ②一切准备就绪后，实验开始了。 __________________________，the experiment began. what will happen With all the things prepared UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ③正是这个实验激励我们探索化学的奥秘。 It is the experiment that ___________________ the mysteries of chemistry. ④不止一个学生对实验结果感到惊讶。 More than one student _____________ the result of the experiment. inspires us to explore was amazed by UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ⑤经过实验，我可以得出结论，气压确实存在。 After the experiment, I can ________________________ air pressure indeed exists. draw the conclusion that UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Ⅰ　写实验报告 ►文体感知 英文的实验报告属于说明文，内容主要为描述实验目的、实验材料、实验步骤、实验结果等。实验报告要明确体现实验目的、步骤和结果，对具体实验现象的描述要客观准确，分析要全面具体，语言要简洁质朴、通俗易懂。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ►写作技巧 实验报告主要包含以下几个部分： 1．开头——介绍实验背景和实验目的； 2．主体——介绍实验材料和实验的具体步骤； 3．结尾——交代实验的结果和从中学到的知识或者道理。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ►典例展示 根据下面所给的提示，书写一份完整的实验报告。 1．实验目的：观察水的沸腾。 2．实验步骤： (1)在烧杯中放入适量的水； (2)把温度计放到水中； (3)点燃酒精灯，仔细观察温度计和水的变化。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 3．实验结果： (1)水温在60℃以下时，随着水温不断升高，杯底气泡越来越多，有少量气泡上升； (2)水温在60～90℃时，杯底气泡逐渐减少，气泡上升逐渐加快； (3)水温达到100℃时，气泡上升最快，水面气泡最多，温度不再变化。 4．实验结论：水在100℃时开始沸腾。 参考词汇：烧杯beaker；温度计thermometer；酒精灯alcohol burner；气泡bubble UNIT 3　The world of science 英语　必修　第三册　W 返回导航 注意： 1．词数80左右； 2．可以适当增加细节，以使行文连贯。 ________________________________________________________ ________________________________________________________ ________________________________________________________ UNIT 3　The world of science 英语　必修　第三册　W 返回导航 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [实践应用] 1．完成句子 ①设计该实验的目的是观察水沸腾时的温度及发生的变化。 This experiment ______________________ the temperature when water boils and what happens in water during the boiling. ②为了做实验，我准备了水和以下仪器：一个温度计、一个烧杯和一盏酒精灯。 ________________________，I prepared water and the following instruments：a thermometer，a beaker and an alcohol burner. is designed to observe To carry out the experiment UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ③现在你能够看到，当温度达到100℃时，大量的气泡会从杯底上升至水面。 Now you can see that _____________________________________________，plenty of bubbles rise from the bottom of the beaker to the water surface. when the temperature reaches 100 degrees centigrade UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ④实验后，我可以得出结论：水在100℃时开始沸腾，另外大量的气泡会在沸腾时上升至水面。 After the experiment，I can draw a conclusion：water starts boiling at 100 degrees centigrade _________________________________________________． with plenty of bubbles rising to the surface during the boiling UNIT 3　The world of science 英语　必修　第三册　W 返回导航 2．句式升级 ⑤用that引导的主语从句、with复合结构改写句③ ________________________________________________________________________________________________________________________________________________________ Now it can be seen that plenty of bubbles rise from the bottom of the beaker to the water surface with the temperature reaching 100 degrees centigrade. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ⑥用that引导的同位语从句、while引导的时间状语从句改写句④ ________________________________________________________________________________________________________________________________________________________________ After the experiment，I can draw a conclusion that water starts boiling at 100 degrees centigrade while plenty of bubbles rise to the surface during the boiling. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 3．靓化成篇 结合以上句子写一篇语言流畅、用词准确、逻辑严密的短文。 ________________________________________________________ ________________________________________________________ ________________________________________________________ UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [参考范文] This experiment is designed to observe the temperature when water boils and what happens in water during the boiling. To carry out the experiment，I prepared water and the following instruments：a thermometer，a beaker and an alcohol burner. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Procedure： First，half fill the beaker with water. Then put the thermometer in it. Finally，light the alcohol burner and heat the water，and observe the readings of the thermometer. Now it can be seen that plenty of bubbles rise from the bottom of the beaker to the water surface with the temperature reaching 100 degrees centigrade. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 After the experiment，I can draw a conclusion that water starts boiling at 100 degrees centigrade while plenty of bubbles rise to the surface during the boiling. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 ►实战演练 根据下面提示，写一篇有关“不打破鸡蛋除去蛋壳”的实验报告。 1．实验目的： 不打破鸡蛋除去蛋壳 2．实验仪器和材料： 一只玻璃杯，一个小煮锅(saucepan)，水，一个鸡蛋，约 250 毫升醋(vinegar) UNIT 3　The world of science 英语　必修　第三册　W 返回导航 3．实验步骤： (1)把鸡蛋放在煮锅中煮 10 分钟左右；(2)把鸡蛋放在玻璃杯中； (3)往玻璃杯中倒醋，醋要漫过鸡蛋；(4)把鸡蛋泡在醋中 24 小时。 4．实验结果： 24 小时后蛋壳完全消失。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 5．实验结论： 醋中的酸性物质(acid)与蛋壳中的碳酸钙(CaCO3)反应生成二氧化碳(CO2)，蛋壳消失。 ________________________________________________________ ________________________________________________________ ________________________________________________________ UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [参考范文] The aim of this experiment is to remove the shell from an egg without breaking it. To carry out the experiment，I need to prepare the following things: a glass, a small saucepan, water, an egg, and about 250 ml vinegar. With all these things ready，I begin the experiment. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 First, boil the egg for about ten minutes in the saucepan filled with water. Next, place the egg in the glass and pour vinegar over the egg. After that, leave the egg in the vinegar for 24 hours. Finally, the shell disappears completely. The shell is mostly made of CaCO3 and the vinegar contains acid. The egg shell dissolves because CaCO3 reacts with acid to form the gas CO2. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Ⅱ　读后续写 阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。 When Edith heard there was a competition to invent a brand-new machine, she longed to enter. Her idol(偶像), the famous inventor Mathew, was going to be the judge! Edith planned and worked on her invention every day after school. Finally, a huge light-up music box was finished—just in time for the competition. She was sure it would win first prize. Everyone would certainly be amazed when the lights shone and the music began to play. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 However, when Edith slowly turned the handle(手柄), nothing happened. The machine needed more power. Edith turned the handle faster, but no matter how quickly she went, she couldn't get more than a flash from the lights. There was no way this would win and she had run out of time to fix it. On the competition night, Edith went to the town hall with a heavy heart.She set up her music machine, feeling like a failure. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Mathew burst through the doors on his bike, whose pedals(脚踏板) gave off light. Everyone cheered excitedly. He got off the bike and walked around the rooms to see the inventions on show. Edith was nervous as he came over. “Can you tell me about your machine？” he asked. “It is a music machine that lights up，” Edith said in a low voice. Mathew clapped happily，“Amazing! Show me how it works.” UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Edith turned the handle faster than she'd ever managed before. Terrible slow music started and the lights flashed on and off. Someone nearby laughed. Edith's cheeks turned red.“Don't worry，” Mathew smiled.“All my inventions went wrong when I was younger. You mustn't give up.” Hiding behind the machine, Edith couldn't wait for the competition to end. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 The judging had almost finished when suddenly the lights of the hall went out. No one could get the lights to work and the competition couldn't carry on. Edith thought for a moment. If only she were stronger, she could have turned the handle of her machine faster and lit up the room. In the dark, Edith could just see Mathew climbing onto his bike, with his pedals glimmering(发出微光). UNIT 3　The world of science 英语　必修　第三册　W 返回导航 注意： 1．续写词数应为150左右； 2．请按如下格式在相应位置作答。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Paragraph 1： “Don't go！” Edith shouted, “I know how to light up the room！”____________________________________________________ ________________________________________________________ Paragraph 2： Everyone jumped with joy as light and music from the machine filled the room.___________________________________________________ ________________________________________________________ UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [巧读文] 1．读要素 Who：Edith，Mathew Where：in a competition When：on the competition night What：to invent a huge light-up music box UNIT 3　The world of science 英语　必修　第三册　W 返回导航 2．读双线(情节线、情感线) 情节线： 情感线：eager→frustrated→nervous UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [妙构思] 1．读首句，定方向 Paragraph 1： 由续写第一段首句“‘Don't go！’ Edith shouted，‘I know how to light up the room！’”可知，本段应该写Edith告诉Mathew她为什么需要他的帮助，Mathew同意了，按照Edith的方法，音乐盒亮了，点亮了房间。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Paragraph 2： 由续写第二段首句“Everyone jumped with joy as light and music from the machine filled the room.”可知，本段应该写比赛继续进行，Edith获得了比赛的第一名并获得感悟。 UNIT 3　The world of science 英语　必修　第三册　W 返回导航 2．巧设问，定细节 Paragraph 1： (1)How to light up the room? _________________________ (2)How did Mathew think of the method? __________ Turned the handle faster. He agreed. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 (3)What did Mathew do? ____________________________________________________ (4)What happened at last? ______________________________ Mathew rode the bike, which linked to the music box. The music box lit up the room. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Paragraph 2： (1)How did everyone present feel? ______________________________________________________________________________ (2)What was the result of the competition? ______________________ (3)What can we learn from the passage? __________________________________________________________ They were grateful because Edith had made it possible for the competition to carry on. Edith won first place. Success belongs to those who never give up and have ideas. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [雕句式] 根据提示升级下列句子 1．If you turn the handle faster, the light is brighter. →________________________________________________(the more ...the more ...句型) 2．When he heard the method that Edith offered, Mathew agreed and helped her to link his bike with the music box. →__________________________________，Mathew agreed and helped her to link his bike with the music box.(分词作状语) The faster you turn the handle, the brighter the light is. Hearing the method that Edith offered UNIT 3　The world of science 英语　必修　第三册　W 返回导航 3. Mathew announced that Edith won first place. Edith jumped with joy. →_____________________________________________，Edith jumped with joy.(时间状语从句) When Mathew announced that Edith won first place UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [成美文] Paragraph 1： “Don't go！” Edith shouted, “I know how to light up the room！”____________________________________________________ ________________________________________________________ Paragraph 2： Everyone jumped with joy as light and music from the machine filled the room.___________________________________________________ ________________________________________________________ UNIT 3　The world of science 英语　必修　第三册　W 返回导航 [参考范文] Paragraph 1： “Don't go！” Edith shouted, “I know how to light up the room！” Edith said，“The machine needs a lot of power to turn the handle. The faster you turn the handle, the brighter the light is. However, I'm not strong enough to turn the handle. I think you and your bike can be helpful.” Hearing the method that Edith offered, Mathew agreed and helped her to link his bike with the music box. As Mathew rode the bike, the music box gradually lit up the room. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 Paragraph 2： Everyone jumped with joy as light and music from the machine filled the room.Everyone was grateful that Edith had made it possible for the competition to carry on. It was time for judgment. When Mathew announced that Edith won first place, Edith jumped with joy. Mathew said success belongs to those who never give up and have ideas. UNIT 3　The world of science 英语　必修　第三册　W 返回导航 课时梯级训练(十二) 单元综合检测(三) 谢 谢 [审题谋篇] 确定体裁、话题 体裁：说明文(实验报告) 话题：“水沸腾”实验 确定时态、人称 时态：一般现在时 人称：第一、第三人称 布局文章架构 首段：实验目的 中段：实验步骤 尾段：实验结论 列出核心要点 1.实验目的：观察水的沸腾 2．具体实验步骤及实验结果 3．实验结论：水在100℃时开始沸腾 $$