展示课件(学生课前做好准备:
绿草如茵,树木成林,鸟飞长空,鱼翔浅底等自然风光的图画。
学生看后谈感受,教师小结:
大自然是人类之母,人类一直享受着他的恩惠,在她怀中壮大,高天流云、小桥流水、大漠孤烟、黄河落日无不给我们以美的享受。然而随着现代科技的进步,人类已破坏了自然,自然母亲已伤痕累累。看看漫天的沙尘,污浊的空气,脱皮空腹的山峦,日渐枯竭的水源……这就是人类在“征服”和“改造”自然的过程中,接受自然回馈的礼物。人与自然到底是什么关系?人类又该怎样对待自然呢?今天就让我们走进并感悟严春友的《敬畏自然》,或许我们就会多一份爱护自然的责任。
What our life will be like in the future?When I was a little boy,I always asked myself this question.At that time,I had no idea what Internet was.But now,we use it every day.We can't live without it.Internet is become so popular and so convenient.
Just forget it.What our life will be like in the future?For example,in ten years.I think that in ten years our life will be much more colorful,our computer will be much powerful,and we can do almost everything on the internet including seeing a doctor.What about your future life ?Will you share with me?
万里长城是世界古代建筑的奇迹。早在春秋时期,楚国就修筑了长数百千米的非封闭性城墙,叫作方城。战国时,燕、赵、魏、韩、秦等都在边界筑起了长城。秦始皇统一天下后,把燕、赵、秦原有的北方长城连接起来,筑成西起临洮东至辽东的长城,长万余里。今山西大同北部,甘肃岷县城西等地均有秦长城遗址。
西汉沿河西走廊一带向西增筑朔方长城和河西长城,经玉门关延伸到今新疆境内,以保护河西走廊。北魏时西部柔然人满为患,又兴筑长城以防柔然人南侵。北齐也多次修筑长城。隋代为防御突厥、吐谷浑,数度修筑长城。明朝建立后,大将徐达曾18次在居庸关修筑长城。明长城西起甘肃嘉峪关,东至鸭绿江,这就是今天我们见到的万里长城。
明长城主体是城墙。山西东面至山海关一段,断面下宽上狭,平均底宽6米,高逾6.5米,外砌整齐条石和特大城砖,内部夯土。城墙顶部用三、四层砖铺砌,最上一层是方砖,用石灰勾缝,十分平正坚实,连野草也难以生根,平均宽5米,可容5马
并骑10人并进。墙顶两侧还砌有砖墙,内侧砌成约高1.5米的矮墙,外侧砌成约高1.5米的垛墙,每一垛牙上面有了望孔,下面有一射击眼。城墙上有排水沟、吐水嘴等设施,在关口和险要的地方还设有凸出的罗城。
修筑长城的工程浩大,筑长城所用土方如所来筑一道厚1米、高5米的墙,可绕地球一周有余。筑长城一般就地取材,大型城砖和石灰是就地烧制的。在高山峻岭,则开采石料,用石砌筑。在沙漠中,用红柳枝条和芦苇与砂石层层相间铺砌,可砌到6.5米以上。在黄土地区,大都取土垒筑,在重要地段的城墙一般用砖砌和条石镶砌
学生朗读课文,用课件展示下列词语:学生读准字音并据上下文语境理解词义:
混淆咫尺狼藉相形见绌硕大狂妄精巧绝伦深邃
记得在我上二年级的时候,发生过这样一件事。
那天中午,我正在房间里抱着爸爸给我新买的那本《十万个为什么》,翻来覆去地看个不停。妈妈正在厨房里为了做菜忙得火热朝天。
忽然,听到妈妈喊一句:“儿子啊,没有味精了!你帮我到公园门口的小超市买一包味精回来好不?”我在看书,正看的起劲,想也没想就脱口而出:“好。妈妈塞了20元钱到我手里。我还沉浸在书里,一手拿住书,另一手拿住钱,穿好鞋子就边看书边走到了小卖部门口。”
我照妈妈的话,用极高的童音对着小卖部里面的阿姨说:“阿姨,要一条围巾。”
里面的那位阿姨很是奇怪:“现在大热天的买什么围巾啊?”
我说:“我也不知道,我妈妈要我买的。”
那位阿姨就拿了一条便宜的17元的围巾给我,找回我3元钱后,我看着书回到了家里。
刚进家门,妈妈就高兴地欢呼:“噢,味精来了,味精来了。”
我说:“妈啊,你大热天的买围巾干什么?”
妈妈说:“做菜要用啊!做菜不给味精味道就差很多!”
我心里暗暗默念:以后如果我会做菜了,一定每次都要给一条围巾。就把那条围巾递给了妈妈。
妈妈拿到围巾,顿时傻了眼:“我要你买的味精,你买围巾回来干什么?”
我大惑不解:“就是你要我买围巾回来的啊!”
这时我忽然想起妈妈吩咐我的时候我的脑袋里全是书,当然会听错。便说:“。不好意思。我看书太认真。听错了。”脸涨得通红。
妈妈开心地笑了,把我搂进怀里。
这件事再回想起来,还能让我开怀大笑。
Elephants are the biggest animals on land. They have long noses, and we call the noses trunks. Elephants use their trunks to get food and put the food into their mouths. Elephants have very long and strong teeth. and we call the teeth tusks.
People in some countries teach elephants how to work for man. Elephants use their trunks and tusks to pull trees along and lift heavy logs.
Most of the children like elephants, because they think elephants are kind and friendly.
Elephants are the biggest wild animals in land, in the world. But now, they are also in danger. Let me tell something to you about them.
Elephants are big and strong and they are grey. They have long trunks and tusks, so they look a little dangerous. But in fact, they’re friendly towards each other and hardly hunt people.
Elephants have ears like fans, they make them look bigger and bigger.
They live in a group together for many years, they’re a big family. They also have good hearing and good sense of smell. Elephants can do lots of things if people train them. For example, they can carry heavy things, can do as a vehicle, ext.
Badly, it’s difficult for elephants to survive in the world usually because of people. If people sell tusks, they will make lots of money.
So, many people kill elephants for their tusks. Living areas are also an important reason of the die out of elephants.
Animals are our friends, we should protect them, or the number of wild animals will getting smaller and smaller.
1.再读课文,讨论交流下列问题:
⑴作者为什么提出“敬畏自然”?
⑵为什么说“敬畏自然”就是“敬畏我们自己”?
(分小组讨论、交流,然后请小组代表发言。
要求:阐述观点,有理有据,一定要结合课文内容,不能脱离文本。
教师归纳:
⑴因为人类常常与自然对立,有时违背自然规律,受到了自然的惩罚,只有认识自然、爱护自然,人与自然才能和谐发展。所以作者提出要“敬畏自然”。
⑵人类与自然都是孕育生命的组成部分,都是平等的生命,只是存在的形式不同,所以敬畏自然,就是敬畏生命,就是敬畏我们自己。
© 2022 xuexicn.net,All Rights Reserved.