第一篇:小学英语演讲稿 天气预报
Good morning,everyone!I’m the weather reporter Zhu Ziming.Here’s the weather report for some big cities in China.Beijing is cloudy.And the temperature is from four to six centidegree, It’s a little cold, so wear warm clothes when you go out.In Hong Kong there’s beautiful sunshine(阳光灿烂).People will feel warm in the daytime.It is sunny in Shanghai, but there’s a strong wind(大风)in the afternoon.It will be rainy in Chongqing.But it’s also very hot.The day after tomorrow(后天)will be sunny.And Zhengzhou will be rainy today.Please remember to bring umbrella with you.That’s the weather report for today.Thank you for listening.
第二篇:天气预报英语演讲稿
蓝色预警 blue alert 一般是24h之内出现某种灾害性天气,程度最轻 黄色预警 yellow alert 一般指12h之内出现某种灾害性天气,程度重一些 橙色预警 orange alert 一般指6h之内出现某种灾害性天气,程度更重 红色预警 red alert 一般指3h出现某种灾害性天气,程度最重篇二:英语谈论天气常用句子
英语谈论天气常用句子
询问天气:
whats the weather like today? 今天天气怎么样? whats the weather like in winter in beijing? 北京冬天天气怎么样? whats it like outside today? 今天外面天气怎么样? how is the weather tomorrow? 明天的天气怎么样? whats the weather going to be tomorrow? 明天天气怎样? what does the weather forecast say? 天气预报怎么说的? have you heard the weather forecast? 你听天气预报了吗? whats the weather report for tomorrow? 天气预报明天怎么样? what will it be after the clear weather? 晴天以后天气怎么样? is the weather always like this? 天气老是这样的吗? is it always as hot as this? 天气总是这样热吗? do you like the weather here? 你喜欢这儿的天气吗? what do you think of the weather here? 你觉得这儿的天气怎么样? which seasins dou you like best? 你最喜欢哪个季节? whats your favorite season? 你最喜欢哪个季节? 谈论好天气:
what a nice day!多好的天气呀!what great weather were having today!今天天气真好!its a beautiful/lovely day.今天是个好天气 its sunny 是晴天
its cool/warm/pleasant 天气很凉爽/温暖/舒适 its very crisp and cool 天气干爽 today is a sunny day 今天真是阳光灿烂的一天 the sun is shining 阳光明媚 the weather is much better than yesterday 天气比昨天好多了 the air is warm,but theres a nice breeze 空气很热,但是有怡人的微风 its going to be fine tomorrow 明天将会有好天气 well have fine weather for the next few days 以后几天天气晴朗 i hope the weather will stay this way 我希望这种天气持续下去 its good to see the sun again 真是太好了,太阳又出来了 lovely weather,isnt it? 天气真好,是吗? fine day,isnt it? 今天是个好天气,是吧? 谈论不好的天气:
the weather is terrible 天气真糟糕 the weather forecast says it isnt good 天气预报说今天天气不好
谈论气温:
whats the temperature? 温度是多少? it will get warmer as the day goes by 天气会一天天地变暖和 spring is warm 春天是温暖的 its a warm day 是温暖的天气 its warmer than yesterday(今天)比昨天暖和 how hot is it outside? 外面有多热? its so hot/cold 是如此的热/冷 its burning hot!燃烧般的热!its africa hot 非洲般的热 its very sultry 天气非常的闷热 its extremely hot and muggy 天气非常炎热闷人 its blazing hot outside 外面很炽热 with all this moisture,it feels very muggy outside 由于湿气很重,外面很闷热 i felt like i was roasting inside house 在屋里我觉得跟火烤一样 this morning is cooler than expected 今天早上比预计的要凉快 its cools down in the fall 到了秋天天气渐渐凉了 i hope the weather there is cold enough 我希望那儿天气够冷 the temperature has dropped a lot today.今天温度低多了 its going to get cold fast 天气很快会变冷的 its a little bit chilly out 外面有点寒冷 its freezing outside 外面很冷 its twenty degrees centigrade today 今天是摄氏二十度 the temperature will drop below zero 气温将降到零度以下 its two below zero.零下二度。its seven degrees below zero. 今天是零下七度。(摄氏)you know global warming may raise the temperature 你知道全球变暖会使气温上
升
谈论雨天:
as long as it doesnt rain 只要不下雨就行 its going to be cloudy tomorrow 明天将是阴天 it looks like rain.看起来要下雨 i guess its going to tain 我想要下雨了 the paper says it might rain this evening 报纸说今天傍晚可能要下雨 its wet and cloudy 天气潮湿阴沉 its rainy and wet 天下雨并且潮湿 its drizzling/sprinkling outside 外面在下毛毛雨 its really raining 雨下的可真大 its raining pretty hard right now 现在雨下得很大 the rain is pouring down 大雨倾盆而下 its raining cats and dogs.天正下瓢泼大雨 its raining buckets 雨量像水桶倒出来一样 its thundering and lightening.雷电交加 i hope the rain will stop soon 我希望这场雨会很快停下来 the rain seems to be stopping 雨看来渐渐停了 itll clear up soon 天很快就会放晴 it seems to be cleaning up.天似乎要转晴 some of the street are almost flooded with rain 有些街道几乎被雨水淹了 we had a lot of rain this winter though 但是我们今年冬天下了很多雨
谈论刮风:
i think there will be a strong wind 我想可能要刮大风了 todays a windy day 今天外面刮大风 its a windy day 刮风了
its blowing hard.风刮得很大
谈论雪天: its rainy/cloudy/windy/snowy/wet/dry.今天是雨天/阴天/刮风/下雪/潮湿/干燥。im afraid it wont be cold enough for a snowfall 我恐怕天不会冷的下雪 its starting to snow outside 外面开始下雪了 its snowing heavily.正在下大雪。the snow won’t last long.雪不会持续太久。how much snow do you have in the winter in this area? 你们这个地区冬天下多少雪? the average snowfall each year is about two feet 每年平均降雪量大约两英尺
谈论雾天:
its very foggy.雾很大。the fog is beginning to lift.正在收雾。
其他:篇三:英文演讲稿写作训练
演讲稿写作训练
高二英语组
演讲稿是人们在工作和社会生活中经常使用的一种文体,它是在较为隆重的仪式上和某些公众场所发表的讲话文稿。写好演讲稿,应
注意以下三点: 1.格式
演讲稿一般由三部分组成,即:称呼语(greetings)、正文(body)和
结束语(closing)。常见的称呼语有ladies and gentlemen, friends, boys and girls等,一般称呼语前不使用dear。2.内容
演讲稿的主题部分应该阐述清楚事情的缘由、结果和要求。第一部分的内容应该以详细完整地介绍事情为主,具体地讲,包括事情的发生、发展及结局。第二部分的内容应该提出发言稿的主题,如欢迎、欢送、3.语言
演讲稿以简单句为主要的表达形式。同时,演讲稿的语言必须有感染
力,所以演讲稿可以使用祈使句、感叹句、强调句等句式来达到这种
目的。写作时要注意适当地使用关联词承前启后,用词要得体,符合语言环境。
演讲稿示例 1.假如你是一名导游,陪同某外国旅游团游览长城。车抵长城,下 车前你准备对大家作必要的介绍和交代。请拟一份讲话稿。讲话稿必
须包括以下内容:
1.简单介绍长城(世界上最长的城墙,有两千多年的历史,是世界奇 观之一);
2.在长城逗留两个半小时,11点离开; 3.游览车在入口处等候,记住车号,准时返回; 4.贵重物品随身携带,下车前关上车窗; 5.游览时注意安全,祝大家玩得愉快。
注意:不要逐句翻译,字数100个单词左右。
【参考范文】
ladies and gentlemen, here we are at the foot of the great wall.it is the longest wall in the world and has a history of over 2 000 years.it is one of the wonders of the world.we’ll stay here for two hours and a half, that is to say, we’ll leave at 11 o’clock.the bus will be waiting for us at the entrance.please remember our bus number and be back on time.besides, please take your valuable things with you and shut all the windows before you get off.be careful while you are on the great wall.have a good time!2.假如你是业余气象员,你从电台天气预报节目得知了今晚和明天
上午你处的天气情况,晚饭后6点钟在校广播室用英语向全体师生作 天气预报,并提出忠告。要点如下:
①午夜至凌晨两点有强劲北风。②气温将下降5-8度。
③明天上午有阵雨。④要求同学们今晚离开教室时关好门窗。
⑤明天早上起床时多穿些衣服,以防感冒。
词数100在右。attention, please.it is six oclock in the afternoon.im now giving the weather forecast as usual.from midnight to 2:00 tomorrow morning there will be strong north wind blowing across our town and the temperature will drop by 5-8℃.also there will be showers tomorrow morning.therefore be sure to close all the windows when you leave your classroom tonight and when you get up tomorrow morning.please put on more clothes in order to protect yourself catching cold.thats all.thank you.wang xiaoming 作文训练
假定你是某学校学生会主席,你校将选拔学生参加模特大赛。请你按以下内容要点准备一篇英文发言稿,谈谈你的看法,并鼓励大家积极参与。1.实现梦想; 2.学会生活; 3.促进学习。
注意:1.词数120—150;
2.可以适当增加细节,使行文连贯; 3.发言稿的开头与结束语已为你写好(不计入总词数)。good morning, everyone!its known that our school will choose some students to attend the model contest.in my opinion
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______________________________________________________________________________ 安徽卷高考英语作文 假设美国某中学的学生明天来你校访问交流,主题是高中生对文,理科的选择。请你用英语写一篇发言稿,向他们介绍你所做的选择,并说明选择的理由。注意:1.开头和结尾已为你写好,不计入总词数; 2.词数120左右;
3.短文中不能出现与本人相关的信息。
参考词汇:文科arts;理科:science
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______________________________________________________________________________篇四:天气预报的英语表达方式
天气预报的英语表达方式: sunny晴天 cloudy多云 overcast阴天 light rain 小雨 moderate rain 中雨 heavy rain 大雨 moderate snow中雪 heavy snow 大雪 light snow 小雪 rainstorm暴雨
thunderstorm雷雨 fog雾 frost霜冻 sleet 雨夹雪 typhoon台风 sandstorm 沙尘暴
天气状况
wind direction风向 wind force 风力
lowest temperature最低气温(℃)highest temperature最高气温(℃)am clouds / pm sun=上午有云/下午后晴 am showers=上午阵雨
am snow showers=上午阵雪 am t-storms=上午雷暴雨 clear=晴朗 cloudy=多云
cloudy / wind=阴时有风
clouds early / clearing late=早多云/晚转晴 drifting snow=飘雪 drizzle=毛毛雨 dust=灰尘 fair=晴
few showers=短暂阵雨
few snow showers=短暂阵雪 few snow showers / wind=短暂阵雪时有风 fog=雾 haze=薄雾 hail=冰雹
heavy rain=大雨 heavy rain icy=大冰雨 heavy snow=大雪
heavy t-storm=强烈雷雨 isolated t-storms=局部雷雨 light drizzle=微雨 light rain=小雨
light rain shower=小阵雨 light rain shower and windy=小阵雨带风 light rain with thunder=小雨有雷声 light snow=小雪
light snow fall=小降雪
light snow grains=小粒雪 light snow shower=小阵雪 lightening=雷电 mist=薄雾
mostly clear=大部晴朗 mostly cloudy=大部多云
mostly cloudy/ windy=多云时阴有风 mostly sunny=晴时多云 partly cloudy=局部多云
partly cloudy/ windy=多云时有风 pm rain / wind=下午小雨时有风 pm light rain=下午小雨 pm showers=下午阵雨
pm snow showers=下午阵雪 pm t-storms=下午雷雨 rain=雨
rain shower=阵雨
rain shower/ windy=阵雨/有风 rain / snow showers=雨或阵雪 rain / snow showers early=下雨/早间阵雪 rain / wind=雨时有风 rain and snow=雨夹雪
scattered showers=零星阵雨 scattered showers / wind=零星阵雨时有风 scattered snow showers=零星阵雪 scattered snow showers / wind=零星阵雪时有风 scattered strong storms=零星强烈暴风雨 scattered t-storms=零星雷雨 showers=阵雨
showers early=早有阵雨 showers late=晚有阵雨 showers / wind=阵雨时有风 showers in the vicinity=周围有阵雨 smoke=烟雾 snow=雪
snow / rain icy mix=冰雨夹雪 snow and fog=雾夹雪 snow shower=阵雪 snowflakes=雪花 sunny=阳光
sunny / wind=晴时有风 sunny day=晴天 thunder=雷鸣
thunder in the vicinity=周围有雷雨 t-storms=雷雨 t-storms early=早有持续雷雨 t-storms late=晚有持续雷雨 windy=有风
windy / snowy=有风/有雪 windy rain=刮风下雨
wintry mix=雨雪混合 sunny 晴天 cloudy 密云 shower 骤雨 stormy 暴风雨 fine 好天 overcast 阴天 windy 大风 breezy 微风 light rain 微雨 heavy rain 大雨 snowy 下雪天
thunderstorm 雷雨 rainy 雨天 118 | 评论(6)其他答案 共7条
2012-1-19 22:19 rebirth_cr | 四级 overcast clear cloudy shower rainy heavy rain rainstorm 雷阵雨 thunderstorm 阵风flatus flurry gust 微风breeze breath breathing breezee gentle breeze 台风typhoon 龙卷风cyclone tornado 雾brume fog mist reek 雪grue sonw 霜frost hoarfrost 冰雹hail hailstone 暴风雨天气
wild weather.天气雷达
weather radar 天气过程
weather process 天气谚语 weather lore 天气报告
weather advisory 坏天气
villainous weather 坏天气
vile weather 寒冷天气
shivery weather 好天气
propitious weather am clouds / pm sun=上午有云/下午后晴 am showers=上午阵雨 am snow showers=上午阵雪 am t-storms=上午雷暴雨 clear=晴朗 cloudy=多云
cloudy / wind=阴时有风
clouds early / clearing late=早多云/晚转晴 drifting snow=飘雪 drizzle=毛毛雨 dust=灰尘 fair=晴
few showers=短暂阵雨
few snow showers=短暂阵雪 few snow showers / wind=短暂阵雪时有风 fog=雾 haze=薄雾 hail=冰雹
heavy rain=大雨
heavy rain icy=大冰雨 heavy snow=大雪
heavy t-storm=强烈雷雨 isolated t-storms=局部雷雨 light drizzle=微雨 light rain=小雨
light rain shower=小阵雨 light rain shower and windy=小阵雨带风 light rain with thunder=小雨有雷声 light snow=小雪
light snow fall=小降雪 light snow grains=小粒雪 light snow shower=小阵雪 lightening=雷电 mist=薄雾
mostly clear=大部晴朗 mostly cloudy=大部多云
mostly cloudy/ windy=多云时阴有风 mostly sunny=晴时多云 partly cloudy=局部多云
partly cloudy/ windy=多云时有风 pm rain / wind=下午小雨时有风 pm light rain=下午小雨 pm showers=下午阵雨
pm snow showers=下午阵雪 pm t-storms=下午雷雨 rain=雨
rain shower=阵雨
rain shower/ windy=阵雨/有风 rain / snow showers=雨或阵雪 rain / snow showers early=下雨/早间阵雪 rain / wind=雨时有风 rain and snow=雨夹雪
scattered showers=零星阵雨 scattered showers / wind=零星阵雨时有风 scattered snow showers=零星阵雪 scattered snow showers / wind=零星阵雪时有风 scattered strong storms=零星强烈暴风雨 scattered t-storms=零星雷雨 showers=阵雨
showers early=早有阵雨 showers late=晚有阵雨 showers / wind=阵雨时有风 showers in the vicinity=周围有阵雨 smoke=烟雾 snow=雪
snow / rain icy mix=冰雨夹雪 snow and fog=雾夹雪 snow shower=阵雪 snowflakes=雪花 sunny=阳光
sunny / wind=晴时有风
sunny day=晴天篇五:英文天气预报词汇汇总 2 英文天气预报词汇汇总
天气情况: misty 薄雾 drizzle 小雨 pour/downpour 大雨 sleet 雨夹雪 hail/hailstone 冰雹 drought 干旱 mild 温暖
风的类型: windy 有风 breezy 微风阵阵 heavy/high wind 大风 gale wind 大风 gust 阵风
stormy wind 暴风 typhoon 台风 light air 1级风 light breeze 2级风 gentle breeze 3级风 moderate breeze 4级风 fresh breeze 5级风 strong breeze 6级风 moderate gale 7级风 fresh gale 8级风 strong gale 9级风 whole gale 10级风 storm 11级风 hurricane 12级风/飓风 cloudy to overcast 阴转多云 overcast/dull/gloomy 阴天 frosty 霜冻 damp 潮湿 shower 阵雨 storm 暴风雨 light snow 小雪 monsoon rain 季风雨 duststorm 沙暴 ice sheet 冰川 weather forecast 天气预报 continental climate 大陆性气候 fahrenheit 华氏 turning out cloudy 转阴 cool 凉爽 snowy 有雪 chilly 微冷 wet 雨天 thundery shower 雷阵雨 thundery storm 雷雨 blizzard 暴风雪 seasonal rain 季雨 gentle wind 和风 windy and dusty 风沙 piercing wind 寒风 todays graphic 今日气象图 oceanic climate 海洋性气候 centigrade 摄氏 flood 洪水 iceburg 冰山
天气词汇中英文对照表: 01 sandstorm, duststorm, sand, dust 浮尘,扬沙,沙尘暴等沙尘天气 02 thunderstorms, thundershowers, storm, lightning 雷暴,雷阵雨,风暴,闪电 03 hail 冰雹
04 blowing snow, blizzard, snowdrift, snowstorm 吹雪,大风雪,堆雪,暴风雪
05 snow showers, flurries 阵雪,小雪 06 snow, heavy snow, snowfall 雪,大雪,降雪 07 light snow 小雪 08 sleet雨夹雪
09 showers, heavy showers, rainshower 阵雨,强阵雨(从降雨强度及降雨量上)10 occasional showers, scattered showers零星阵雨(时间、空间上不连续的阵雨)11 isolated showers局地阵雨(空间分布上比scattered showers范围更小的阵雨)12 light showers小阵雨 13 freezing rain冻雨 14 rain雨
drizzle, light rain毛毛雨,小雨 16 fog雾17 mist轻雾18 smoke烟雾19 haze霾20 overcast阴 21 sunny interval, no rain, clearing多云间晴 22 sunny period, partly cloudy, partly bright, mild晴间多云 23 cloudy, mostly cloudy多云
bright, sunny, fair晴(尤指白天)25 fine, clear晴 26 windy, squall, stormy, chill, gale风,狂风,暴风,寒风,大风 27 wet, humid潮湿28 dry干燥29 freezing冰冻30 frost霜冻 31 hot炎热32 cold寒冷33 warm暖和(升温)34 cool凉爽(降温)35 dew point(露点)36 humidity(湿度)37 wind(风力)38 visibility(能见度)39 barometer(气压)am clouds / pm sun=上午有云/下午后晴 am showers=上午阵雨 am snow showers=上午阵雪 am t-storms=上午雷暴雨 clear=晴朗 cloudy=多云 cloudy / wind=阴时有风 clouds early / clearing late=早多云/晚转晴 drifting snow=飘雪 drizzle=毛毛雨 dust=灰尘 fair=晴 few showers=短暂阵雨 few snow showers=短暂阵雪 few snow showers / wind=短暂阵雪时有风 fog=雾 haze=薄雾 hail=冰雹 heavy rain=大雨 heavy rain icy=大冰雨 heavy snow=大雪 heavy t-storm=强烈雷雨
isolated t-storms=局部雷雨 light drizzle=微雨 light rain=小雨 light rain shower=小阵雨 light rain shower and windy=小阵雨带风 light rain with thunder=小雨有雷声 light snow=小雪 light snow fall=小降雪 light snow grains=小粒雪 light snow shower=小阵雪 lightening=雷电 mist=薄雾 mostly clear=大部晴朗 mostly cloudy=大部多云 mostly cloudy/ windy=多云时阴有风 mostly sunny=晴时多云 partly cloudy=局部多云 partly cloudy/ windy=多云时有风 pm rain / wind=下午小雨时有风
pm light rain=下午小雨 pm showers=下午阵雨 pm snow showers=下午阵雪 pm t-storms=下午雷雨 rain=雨 rain shower=阵雨 rain shower/ windy=阵雨/有风 rain / snow showers=雨或阵雪 rain / snow showers early=下雨/早间阵雪
rain / wind=雨时有风 rain and snow=雨夹雪 scattered showers=零星阵雨 scattered showers / wind=零星阵雨时有风 scattered snow showers=零星阵雪 scattered snow showers / wind=零星阵雪时有风 scattered strong storms=零星强烈暴风雨 scattered t-storms=零星雷雨 showers=阵雨 showers early=早有阵雨 showers late=晚有阵雨 showers / wind=阵雨时有风
showers in the vicinity=周围有阵雨 smoke=烟雾 snow / rain icy mix=冰雨夹雪 snow and fog=雾夹雪 snow shower=阵雪 snowflakes=雪花 thunder=雷鸣 thunder in the vicinity=周围有雷雨 t-storms=雷雨 t-storms early=早有持续雷雨 t-storms late=晚有持续雷雨 windy=有风 windy / snowy=有风/有雪 windy rain=刮风下雨 wintry mix=雨雪混合和天气有关的单词: beautiful day 好天气 its a beautiful day.今天天气很好。lovely day 好天气 its a lovely day.今天天气很好。nice day 好天气 例句:its a nice day.今天天气很好。downpour 倾盆大雨 we had a downpour.我们刚遇到了一场倾盆大雨.drizzle 毛毛雨 例句:its drizzling.sprinkle 毛毛雨 its just sprinkling.只是在下毛毛雨而已。
第三篇:天气预报优秀日记
早上:迷雾蒙蒙
本姑娘昨晚“应酬”太多,“夜车”开到了10o‘clock,来不及补个回笼觉呢——“叮铃铃,叮铃铃!小懒虫,快起床……”闹钟偏不饶人,一直叫个不停。我关掉了闹铃,心想:哈哈,可以“高枕无忧”了……可是这“如意算盘”没有打成。我刚睡下,“嘿,快起床!上学要迟到了!”一个“女高音”就响了起来。天哪!天妒“懒虫”呀!唉,我只好乖乖地穿衣服,洗漱,吃早饭……
下午:倾盆大雨
我昏昏沉沉地来到学校,放下bag,拿出Englishbook,开始早读——“by经;乘、foot脚、subway地铁……”过了好久,“叮铃铃”的上课铃才让我们歇了嘴。英语老师走到讲台边,严肃地说:“同学们,我来宣布一下昨天的英语成绩。……陈韵儿89分,佘燕莹98分……”当大家听到这个成绩时,一片哗然,议论纷纷。我羞愧、不安,恨不得找个地缝钻下去。唉,“坚强”的陈韵儿还是哭了……
晚上:雨转多云
我垂头丧气地回到家,不知该怎样面对爸爸妈妈,如何抬起头,害怕、担心一起向我袭来,惶恐不安。我推开家门,一股香气扑鼻而来。是什么?哦,是我最爱吃的菜——咸蛋南瓜。原来,爸爸妈妈早就从老师口中得出我的英语成绩。不过,他们并没有责骂我,爸爸还鼓励我:“孩子呀,这一次没有没有关系,主要原因在于你的不仔细,只要你改掉这个坏习惯,一定能的。你说呢?”我懂事地点点头。爸爸意味深长的一番话,使我幼小的心灵得到安抚。
今天的天气的确“起伏”,相信,明天的天气更“有趣”哟!谢谢大家的收看,明天同一时间,《韵儿天气预报》与大家不见不散!再见!
浙江省湖州市德清县下舍中心学校七年级 陈韵儿
第四篇:英语天气预报
Asia Forecast Video
Hello there, now let’s hear the latest weather report in Asia.Southeast China yet to see more heavy rain, and a risk of local flooding.As we go over the next few days, you can see west of heaviest rains has been in the southeast corner, stretching in towards Taiwan too.Fine dry weather across northeast though, a few showers across certain northern Japan, but i think for Horishi and Kioshu a lot of fine weather, temperatures are fine, close to 30 degrees in one or two spots.During the course of Wednesday, it is the warmest one in Beijing, 30 degrees there but showers and storms are never too faraway.And set in the southeast of China plenty of thunderstorm and heavy downpours are around the Shanghai area, and also for Taiwan and Hongkong.Bit showers as well across the southeast corner for Laos,Vietnam, Cambodia and for Thailand, very humid too.Elsewhere on Wednesday we’ll see 31 degrees in Brunei, 32 in Manila, are pretty to have the downpour as well, across the Philippine during the course of Wednesday and into Thursday.As we heading towards Thursday we’ll continue to see very heavy rain is continuing in the southeast corner.Some sunshine that’ll across the northeast with the temperature of 28 degrees there in Soul, with a good deal of sunshine.Thundery, downpours’ across all these cities(Jakarta, Singapore, Bangkok and Manila)during Friday and into the weekend, and some of them could be very heavy indeed.And looking ahead Friday and Saturday the thundery weather continues in Hongkong and Taipei.
第五篇:简易天气预报器演讲稿
简易天气预报器
各位领导、老师、同学们大家好!我是西海小学四年级学生王雪扬。我今天展示的是我们制作的简易天气预报器。
这个创新设计得益于教科书第一单元20页的资料库的内容——松果的开合。我们学习了第一单元——天气后,我们怎样自己预报天气呢?
我们利用盐的吸水性,杠杆平衡的原理来制作的。实验操作步骤是:
1.用高浓度盐水浸泡棉花,然后将棉花自然凉干。2.一头用细绳穿过乒乓球;另一头用细绳拴着棉花球。3.利用杠杆原理,将乒乓球与棉花球调节平衡,挂在无风的阳台上,以便观察。
下雨前,空气湿度会增加,被盐水浸泡过的棉花球就会吸收水分。因为盐水浸泡过的棉花晾干后含有盐,盐是很容易受潮的——受潮就是吸收空气中的水蒸气,棉花球吸收水分后会加重自身的重量,此时,杠杆天平会倾向有棉花球这一边,这就预示着天要下雨了。
以上不当之处,请提宝贵意见!谢谢大家!