部编版二年级下册16雷雨ppt课件

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12、雷雨前的景象？主要抓住了哪几样景物进行描写,对比手法,课文解读,风来之前,风来之时,满天的乌云，黑沉沉地压下来,乌云,压下来,树上的叶子一动不动,叶子,一动不动,蝉一声也不出,蝉,一声也不,忽然一阵大风，吹得树枝乱摆,大风,树枝,乱摆,一只蜘蛛从网上垂下来，逃走了,蜘蛛,垂下来，逃走了,闪电越来越亮，雷声越来越响,闪电,雷声,越来越亮,越来越响,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,

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14、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,为什么会打雷：雷雨天气，厚厚的 云层在空中翻滚，由于气流的摩擦 分别带上正、负不同的电荷，这些 电荷聚集在云层的两端，并且随云 层的增厚，电荷不断增加。当电荷增加到一定程度，就会穿过云层放电，正负电荷中和时，会放出大量的热，使空气迅速膨胀发出巨大的响声

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21、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,闪电越来越亮，雷声越来越响,雨 中,哗，哗，哗，雨下起来了,思考：雨下得怎么样？你是从哪里体会到

22、的,拟声词连用,展现了雨从天而降时又大又急的情景,读课文第5自然段，说说作者是怎么表现“雨越下越大”的,雨越下越大。往_望去，_啊，_啊，都_了,窗外,树,房子,看不清,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路

23、,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路

24、,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,雨越下越大。往窗外望去，树啊，房子啊，都看不清了,都看不清了,外面一片朦胧的景象，说明雨下得又大又猛又急,雨 后,天亮起来了。打开窗户，清新的空气迎面扑来,和雨前的景象形成对比,太阳出来了。一条彩虹挂在天空,挂在天空,彩虹,出来了,太阳,彩虹是怎样形成的,下雨或雨后，空中悬浮着很多小水珠，它们会像三棱镜一样将阳光分散成红、橙、黄、绿、蓝、靛、紫七种色光，形成彩虹,蝉叫了,蝉,叫了,蜘蛛又坐在网上,蜘蛛,坐在网上,池塘里水满了，

25、青蛙也叫起来了,池塘,水满了,青蛙,叫起来了,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状

26、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,雨停了。太阳出来了。一条彩虹挂在天空。蝉叫了。蜘蛛又坐在网上。池塘里水满了，青蛙也叫起来了,挂,坐,说一说：为什么作者能将雷雨前、雷雨中、雷雨后的景象写得如此细致,能够把这些场面写得如此生动形象，是因为作者留心观察，善于去发现、去探究,雷雨中雨下起来越下越大渐渐小了,雷