（新高考-新课件）新外研版-必修3-Unit-3-Writing-an.ppt

1、Unit 6The world of scienceWriting an experiment report【文体解读【文体解读】话题特点话题特点实验报告是把实验目的、方法、过程、结果等记录实验报告是把实验目的、方法、过程、结果等记录下来下来,经过整理写成的书面汇总材料。实验报告要明确经过整理写成的书面汇总材料。实验报告要明确体现实验目的、步骤和结果体现实验目的、步骤和结果,对具体实验现象的描述要对具体实验现象的描述要客观准确客观准确,分析要全面具体分析要全面具体,语言要简洁质朴、通俗易懂。语言要简洁质朴、通俗易懂。【布局【布局】如何写科学实验报告如何写科学实验报告【范例点评【范例点评】Aim

2、To remove the shell from an egg without breaking it.Materials A glassa small saucepansome wateran eggabout 250ml vinegarProcedure1.Boil the egg for about fifteen minutes in the saucepan filled with water.2.Place the egg in the glass and cover it with vinegar.3.Leave the egg in the vinegar for 24 hou

3、rs.Result24 hours later,the shell disappears completely.ConclusionThe shell is mostly made of CaCO3 and the vinegar includes acids.The egg shell dissolves because CaCO3 reacts with acid to form the gas,CO2.1.话题词汇话题词汇do/carry out/conduct an experiment 做实验做实验aim 目的目的;目标目标material材料材料procedure步骤步骤stage

4、 阶段阶段result 结果结果draw/come to a conclusion 得出结论得出结论2.话题句式话题句式(试着替换黑体部分试着替换黑体部分,变成你需要变成你需要表达的意思表达的意思)(1)描述实验目的、材料、结果、结论描述实验目的、材料、结果、结论:The aim of the experiment is to find out the temperature and what happens when water is boiling.实验的目的是观察水沸腾的温度和现象。实验的目的是观察水沸腾的温度和现象。To do/carry out/conduct the experim

5、ent,you need the following materials:beaker,thermometer,alcohol lamp andmatch.为了做实验为了做实验,你需要下列材料你需要下列材料:烧杯、温度计、酒精和烧杯、温度计、酒精和火柴。火柴。Some time later,bubbles begin to appear when the temperature reaches 100 Centigrade.一段时间之后一段时间之后,温度到达温度到达100时开始出现气泡。时开始出现气泡。We can draw a conclusion that water boils when

6、 the temperature reaches 100.我们可以得出结论我们可以得出结论:水在温度达到水在温度达到100时沸腾。时沸腾。(2)描述实验步骤描述实验步骤:First,fill the beaker with about 100g water.第一第一,在烧杯里盛在烧杯里盛100g左右的水。左右的水。Then,put a thermometer in the water.然后然后,在水中放入温度计。在水中放入温度计。Next,heat the water in the beaker and watch the readings of thermometer.接下来接下来,加热杯中

7、的水加热杯中的水,并观察温度计的读数。并观察温度计的读数。Finally,write down the temperature when bubbles begin to appear.最后最后,气泡开始出现时记下温度。气泡开始出现时记下温度。【迁移训练【迁移训练】英语课堂上英语课堂上,老师要求写一篇英语实验报告。请根据老师要求写一篇英语实验报告。请根据以下要点以下要点,完成此项任务。完成此项任务。实验目的实验目的:验证冰在融化后体积是否变化。验证冰在融化后体积是否变化。实验材料实验材料:一个玻璃杯一个玻璃杯,一块冰一块冰,一些水。一些水。实验步骤实验步骤:把冰放在玻璃杯中把冰放在玻璃杯中,杯

8、中倒满水杯中倒满水,让冰浮在水让冰浮在水上面上面;等待几分钟直到冰融化等待几分钟直到冰融化,观察是否有水从杯子里观察是否有水从杯子里流出或杯子里的水是否有所减少。流出或杯子里的水是否有所减少。实验结论实验结论:水并没有从杯子里流出反而有所减少水并没有从杯子里流出反而有所减少,故冰故冰在融化后体积减少。在融化后体积减少。注意注意:词数词数80左右左右,可适当增加细节。可适当增加细节。词汇词汇:体积体积volume;减少减少decrease【遣词【遣词】1.冰的体积冰的体积 _ 2.融化融化 _3.一块冰一块冰 _ 4.杯中装满水杯中装满水 _ 5.漂在水上漂在水上 _ the volume of

9、 icemelta piece of icefill the glass with waterfloat on the water6.等几分钟等几分钟 _ 7.减少减少 _8.增长增长 _wait a few minutesdecreaseincrease【造句【造句】1.完成句子完成句子(1)在在杯子里放上冰。杯子里放上冰。Put the ice _.(2)杯子里放满水。杯子里放满水。Fill the glass _.in the glasswith water(3)冰融化冰融化了。了。The ice _.melts(4)冰会浮在水上。冰会浮在水上。The ice will _.(5)等几分

10、钟直到冰融化。等几分钟直到冰融化。Wait a few minutes _.(6)水的体积减少。水的体积减少。The volume of water _.float on the watertill/until the ice meltsdecreases2.句式升级句式升级(7)用用and合并合并(2)、(3)句。句。_(8)用用when引导的时间状语从句合并引导的时间状语从句合并(5)、(6)句。句。_ Fill the glass with water and the ice will float on thewater.The volume of water decreases whe

11、n the ice melts.【成篇【成篇】AimTo find out whether the volume of ice changes when it melts.MaterialsA glassa piece of icesome waterProcedure1.Put the ice in the glass.2.Fill the glass with water,and the ice will float on the water.3.Wait a few minutes till the ice melts.ResultThe volume of water decreases when the ice melts.ConclusionThe volume of ice does not increase but decreases when it melts.Thank you!