(共41张PPT)
A. Let's talk
Unit one How tall are you
Look and say
The bear is _________ than the giraffe.
The giraffe is _________ than the bear.
The 3st man is the _________.
The 2nd man is _________.
The 1st man is _________.
tall
taller
tallest
He is the tallest of the three men.
淘宝店铺:有亮点英语
淘宝店铺:有亮点英语
The bus is ________ than the bike.
fast
fastest
faster
So the train is the ________ of them.
The train is ________ than the bus.
faster
I was the largest and heaviest
land animal in the world.
I had long neck and tail.
You can't see me now ,
because we have been extinct for millions of years.
(已经灭绝几百万年了)
What am I
dinosaur
Brachiosaurus 腕龙
/ br ki s r s/
/ da n s (r)/
Where can we see dinosaurs
侏罗纪公园
1. Were all dinosaurs very big
2. What did dinosaurs eat
1. Were all dinosaurs very big
No, they weren't.
Some dinosaurs were very big , but some were small.
翼龙
2. What did dinosaurs eat
Some dinosaurs ate plants .
Some dinosaurs ate meat .
They all like dinosaurs . They go to the _____________ today.
museum
NOw , they are in the hall.
tall
fall
small
Listen and circle
1. Which dinosaurs is the tallest in this hall
2. How tall is the tallest dinosaur
Maybe (可能)...
That green dinosaur is the tallest in this hall.
Maybe 4 metres.
Look!That is the tallest dinosaur in this hall.
Yes, it is. How tall is it
Maybe 4 metres.
Wow! It's taller than both of us together.
我们两人加起来
4.5m
It's taller than both of us together.
它比我们两个加起来还要高。
both
表示“两个都......” (一般位于行为动词之前,be 动词后。)
Lucy and I are classmates. We are both in Class One.
知识点拨
常用搭配: both of ... 例句: Both of us like English.
both ...and... 例句:It is both cheap and nice.
两个都:不仅...而且...
/ ta r n s r s /
Triceratops
三角龙
Stegosaurus
剑龙
Do you want to see more dinosaurs
/ steɡ s r /
/ tra ser t ps /
Velociraptor
迅猛龙
/ v l s r pt (r)/
Tyrannosaurus
霸王龙
/ ta r n s r s /
Q1 How tall is Zhang Peng
Q2 Who is taller , Zhang Peng or the small dinosaur
Watch and answer
He is 1.65 metres tall.
Zhang Peng.
Listen and repeat
Zhang Peng: Look! That's the tallest dinosaur in this hall.
Mike: Wow! It's taller than both of us together.
Zhang Peng: Maybe 4 metres.
Mike: Yes, it is. How tall is it
Zhang Peng: Look! There are more dinosaurs over there!
Mike: They're all so big and tall.
Zhang Peng: Hey, this dinosaur isn't tall! I'm taller than this one.
Show time
1. 腕龙 Height(身高):5 m
Length(身长):21m
Diet:(饮食): Plants
角色:
2. 偷蛋龙 Height(身高):2 m
Length(身长):1.5m
Diet:(饮食): Plants、
eggs /meat/insects
3. 三角龙 Height(身高):3 m
Length(身长):9m
Diet:(饮食): Plants、
4. 参观恐龙者:A 和 B学生
Dialogue model 对话模范:
偷蛋龙: I am the shortest dinosaur. I am ... metres tall .
I like to eat ...
腕龙: I am the tallest dinosaur. I am ... metres tall .
I like to eat plants.
学生A: Look at this dinosaur. It is... I like it.
三角龙: I am ...than the red dinosaur. But I am...than the green one.
I am ... metres tall . I like to eat ...
学生B:I like the small dinosuar . It is ...than me.
1. 形容词的比较级和最高级的用法。
summary (总结)
eg: tall (原级) taller (比较级) tallest (最高级)
Lily
Lin Mei
Liu Yan
Lily is tall. Lin Mei is taller than Lily .
Liu Yan is the tallest of the three girls.
比较级用于两者之间的人、物进行比较
最高级用于三者或三者以上的人、物之间的比较
long(原级)
longer(比较级)
longest (最高级)
short(原级)
shorter(比较级)
shortest (最高级)
young(原级)
youngest (最高级)
youngter(比较级)
比较级:用于两者之间的人、物进行比较
A + be +比较级 + than+ B
例如:I am the tallest in our class.
最高级:用于三者或三者以上的人、物之间的比较
主语 + be +the + 最高级+ of/in...
例如:I am younger than Lily.
2. both 和 all 的用法
both 表示“两者都”,指的是两个人或物。
They are both tall. 他们都很高。
all 表示“全部,都”,指的是三个(以上)人或物。
They are all tall. 他们都很高。
Both of them are tall. 他们俩都很高。
( )1. -I’m 1.62 _____ .
A.metre B. metres C. years D. year
( )1. - Mike is _______ than Joe
A.tall B. taller C. oldest D. old
( )2. Kitty is 12. John is 11. John is ____ than Kitty.
A. old B. older C. young D. younger
( )3. -I like both of ______.
A. your B. we C. them D. she
( ) 4. The tree is the _____ in the garden.
A. tall B. taller C. tallest D.shorter
( )1. -I’m 1.62 _____ .
A.metre B. metres C. years D. year
( )5. Who is _____, Mike or John
A.tall B. young C. oldest D. younger
二.按要求完成句子
1.our, is, the, Mike, tallest, in, class, (.) 连词成句
_______________________________
2 together, is, that, than, both, taller, of, dinosaur, us, (.)连词成句
______________________________________.
3.This tree is about 5 metres. (就划线部分提问)
______________________________________.
Homework
1. 熟读课文对话。
3.寻找、收集更多有关恐龙的信息,和同学分享。
2. 摘抄本课你认为重要的或难点的句子(至少4个),每个句子 各写3行并读熟。
Thank
you
01
恐龙的分类
食草类恐龙
食肉类恐龙
杂食类恐龙
梁龙
剑龙
肿头龙
禽龙
原角龙
独角龙
三角龙
第二类 食肉类恐龙
食肉类恐龙大部份居无定所,以大家都知道的暴龙(霸王龙)而言,它们有时住在山林中的洞穴里、有时住在浓密的丛林中,它们是以突袭的方式猎捕食物。它用那粗大有力的尾巴横扫猎物,将其打昏再冲过去一口咬住,这是大部分大型肉食恐龙的猎食方式。肉食恐龙中的恐爪龙(迅猛龙)体型较小,是群居型的肉食恐龙,不论猎捕食物或迁徙都是群体而行决不单独行动。它们速度极快,猎食时都一起以扑杀的方式群攻,使被盯上的猎物几乎没有逃生的机会,其残暴的猎食方式令人毛骨悚然。
霸王龙
蛇颈龙
翼龙
棘龙
鱼龙
恐爪龙
第三类 杂食类恐龙
以似鸟龙、始祖鸟、偷蛋龙较具代表性,它们极少群居,大多是零零散散的分布在各处。只有在迁移或远行时才有例外。它们生活在深谷、密林内的原因是:(一)为了逃避伤害。(二)深谷、密林中有许多树木、各种植物、杂草丛生,昆虫也非常多,食物较易取得。
02
恐龙灭绝之谜
科学家们是这样为我们描绘6500万年前那壮烈的一幕的。有一天,陨石撞击地球产生了铺天盖地灰尘,极地雪融化,植物毁灭了,火山灰也充满天空。一时间暗无天日,气温骤降,大雨滂沱,山洪暴发,泥石流将恐龙卷走并埋葬起来。在以后的数月乃至数年里,天空依然尘烟翻滚,乌云密布,地球因终年不见阳光而进入低温中,苍茫大地一时间沉寂无声。生物史上的一个时代就这样结束了。
有关恐龙灭绝的假说
”假说“是什么意思
还没有完全被科学方法所证明,也没有被任何一种科学方法所否定的推测和说明。
陨石撞击说
有关恐龙灭绝的假说
气候变迁说
物种斗争说
大陆漂移说
6500万年前,地球气候陡然变化,气温大幅下降,造成大气含氧量下降,令恐龙无法生存。也有人认为,恐龙是冷血动物,身上没有毛或保暖器官,无法适应地球气温的下降,都被冻死了
恐龙年代末期,最初的小型哺乳类动物出现了,这些动物属啮齿类食肉动物,可能以恐龙蛋为食。由于这种小型动物缺乏天敌,越来越多,最终吃光了恐龙蛋
由于地壳变化,“泛古陆”在侏罗纪发生的较大的分裂和漂移现象,最终导致环境和气候的变化,恐龙因此而灭绝。