2020-2021学年高一下学期英语人教新课标必修三Unit 4Astronomy: the science of the stars Reading课件(23张PPT)

(共23张PPT)
How
Life
Began
on
the
Eearth
Unit
4
Reading
Free
talk
Words
competition
How
did
the
earth
come
into
being?
The
Big
Bang
The
Big
Bang
Violent
earth
Atmosphere
A
solid
ball
water
Big
Bang
Watch
a
video
Big
Bang
A
solid
ball
Atmosphere
water
Water
Air
Life
Water
is
the
headspring
of
life.
How
life
began
on
the
earth?
Skimming
How
Life
Began
on
the
Earth
Period
1
Join
the
main
idea
for
each
paragraph:
Para.1
Para.2
Para.3
Para.4
Para.5
a)The
arrival
of
humans
and
their
impact
on
the
earth
b)The
development
of
plants
and
animals
on
the
earth
c)A
widely
accepted
theory
about
the
formation
of
the
universe
d)The
importance
of
water
for
life
e)The
formation
of
the
earth
Scanning
Fill
in
the
blanks
with
different
kinds
of
living
things.
1________________
2____________________
3________________
4__________
5__________
6_________
7__________
8__________
9__________
Small
plants
in
water
shellfish
and
all
sorts
of
fish
green
plants
on
land
insects
amphibians
forests
reptiles
dinosaurs
mammals
plants
animals
Careful
Reading:
Careful
Reading
After
the
“big
bang”,
the
earth
was
still
just
a
cloud
of
_______,it
_______loudly
with
fire
and
rock,
which
were
_____
to
produce
the_________,
carbon
dioxide
and
other
gases.
Then
________
grew.
They
multiplied
and
filled
the
oceans
and
seas
with
_____.
Many
millions
of
years
later
the
first
________
began
to
appear
on
land.
When
the
plants
grew
to
forest,
_____
appeared
for
the
first
time.
They
produced
young
generally
by
__________.
When
dinosaurs
disappeared,
________
became
more
important.
Finish
the
summary
according
to
the
text:
exploded
in
time
water
vapor
small
plants
oxygen
green
plants
reptiles
laying
eggs
mammals
dust
Post
Reading
What
problems
have
been
caused
by
humans
to
the
earth?
How
to
protect
the
earth
and
make
it
a
better
place
to
live
on?
Homework:
1.
Search
the
Internet
for
the
imformation
of
the
development
of
life.
2.
Read
the
passage
carefully
and
try
to
find
out
key
points.
Thank
you!