英语：unit 14 dinosaurs’deaths课件（北京课改版九年级）

课件14张PPT。Unit 14 Dinosaurs’ DeathsAnimalsbee frog duck fox
whale goose lamb
wolf snake ant goat
camel elephant
dinosaur giraffeFind out :
Look at the pictures above, find out:
Which are the animals you can find during daily life?
Which animals still can be found now?
Which animals can’t be found now?What’s dinosaurWrite what do you know about dinosaurs:
Dinosaurs’ Deathsbackground knowledge of the styles of dinosaurs
the time of dinosaurs
the death of dinosaurs
studies about the causes of dinosaursBackground Knowledge兽脚亚目(Theropoda)
A. 艾雷拉龙科(Herrerasauridae)
B. 始盗龙(Eoraptor)
C. 新兽脚类(Neotheropoda)
a. 角鼻龙下目(Ceratosauria)
1. 腔骨龙超科(Ceolophysoidae)
2. 新角鼻龙下目(Neoceratosauria)
b. 坚尾龙次亚目(Tetanurae)
1. 鸟兽脚类(Avetheropoda)
1) 肉食龙类(Carnosauria)
2) 虚骨龙类(Coelurosauria)
2. 蛮龙科(Torvosauridae)
3. 棘龙科(Spinosauridae)the time when dinosaurs lived
Now, dinosaurs are extinct.
They lived sixty-five million years ago.
Dinosaurs’ Deathsreasons may lead to the death of the dinosaurs
dust stopped the sunlight
large object hit with great force,
releasing poisonous chemicalsstudies about the causes of dinosaurs’ death
why?
find huge holes in the ground in eastern
Mexico

two views:
Twenty years ago, what did scientists discover?
About ten years ago, what did scientists find?Expressions:
of the accident
the cause of failure

a difficult problem
work on the riddle

success
lead to the death of the animal

the truth
discover a new star
of deaththe problemRomea new oil fieldgrammar被动句
be v.+ed
It is reported that the earthquake damaged 3 counties.
Light from the sun was stopped from reaching the earth by the cloud.
Ancient animals were poisoned by the chemicals.
grammarfill the blanks:
It ___ ____ that the fox killed the chick. (think)
He ___ ______ from picking the flowers. (stop)
The ball ___ _____ ___ Li Lei. (kick)
isthoughtwasstoppedwaskickedbyclassroom work
Let the students sum two reasons why dinosaurs disappeared
2. Let the students make sentences using “be v.+ed”
self-assessmentSearch information about panda