高中英语牛津译林版（2020）必修第三册Unit1 Welcome to the unit & Reading教案

《英语》（必修·第三册）
Unit
1
Nature
in
the
balance
Welcome
to
the
unit
&
Reading
(I)
I.
Learning
objectives
By
the
end
of
the
lesson,
students
will
be
able
to:
1.
grasp
the
way
of
understanding
a
documentary
script;
2.
know
about
some
information
of
the
Amazon
rainforest;
3.
express
their
opinions
on
environmental
problems;
4.
develop
their
critical
thinking
ability.
II.
Key
competence
focus
1.
Analyse
and
summarize
the
structure
of
the
text.
2.
Think
critically
and
express
opinions
freely.
III.
Predicted
area
of
difficulty
Understand
the
structure
and
improve
reading
skills
of
the
documentary
script.
IV.
Teaching
procedures
Step
1
Lead-in
T
plays
the
song
on
page
1
in
class.
T
leads
Ss
to
talk
about
the
song
by
answering
the
following
questions:
?
What
is
the
message
of
the
song?
(It’s
time
to
protect
and
love
our
home,
the
Earth.)
?
What
can
you
do
to
help
protect
the
environment?
【设计意图：课前播放课本第一页的歌曲，烘托气氛，为文本主题埋下伏笔。通过歌曲提出的两个相关问题，一步一步切入课堂，慢慢熟悉话题，从而自然地进入到阅读部分。】
Step
2
Prediction
T
leads
Ss
to
focus
on
the
title,
the
pictures
and
the
first
paragraph
of
the
script
and
answer
the
following
questions:
?
What
will
be
talked
about
in
the
text
according
to
the
title
and
the
picture?
?
What
could
be
the
genre
of
the
article?
?
Read
the
para.
1.
What
aspects
will
be
mentioned
in
the
following
paragraphs?
【设计意图：指导学生关注标题、图片和文中第一段内容，从而让学生快速获取文体特点、主题语境、下文内容等信息，这种创造性阅读的方式有助提升学生的预测能力。】
Step
3
Analysing
the
structure
T
asks
Ss
to
complete
part
A1
on
page
4
with
the
main
idea
of
each
paragraph.
Para.
1:
Introduction
to
the
Amazon
rainforest
Para.
2:
Basic
information
about
the
rainforest
Para.
3:
Plant
biodiversity;
levels
of
the
rainforest
Para.
4:
Animal
biodiversity;
food
chain
Para.
5:
The
rainforest’s
value
to
the
human
race;
threats
to
the
rainforest
【设计意图：指导学生快速获取段落主旨，帮助学生了解语篇的宏观结构，培养学生概括与归纳段落大意的能力，同时培养学生的阅读技巧。】
Step
4
Reading
for
specific
information
T
asks
Ss
to
read
the
documentary
script
again
carefully
and
fill
in
the
blanks
with
the
figures.
The
Amazon
rainforest
?
8
countries
and
one
overseas
region
?
Around
6
million
km2
of
forest
?
About
6,400
km
in
length
?
More
than
40,000
plant
species
?
More
than
1,300
bird
species
?
Over
400
species
of
mammals
?
Over
20%
of
all
the
Earth’s
oxygen
produced
?
About
17%
of
the
rainforest
lost
over
the
past
50
years
T
asks
Ss
to
read
paragraph
three
and
finish
the
diagram.
From
the
bottom
to
the
top:
?
A
system
of
roots
?
The
mass
of
leaf
litter
?
Shorter
plants
with
large
leaves
?
Towering
ancient
hardwoods
?
The
tops
of
the
tallest
trees
T
asks
Ss
to
read
paragraph
four
and
finish
the
food
chain.
【设计意图：让学生再一次通读全文，重点关注第二、三、四、五段，用表格的形式帮助学生理解细节信息，让学生对段落结构、语篇结构形成深刻的理解。最后细读第三段关于植物的分层，用一个从上到下的图示形式来标识；细读第四段有关食物链的内容，用环形图示展示；这两步的设计都是为了帮助学生更清晰地理解植物分层和食物链的构成。在训练学生思维品质的同时，巩固所学知识，为下一个环节做好铺垫和准备。】
Step
5
Summary
T
asks
Ss
to
finish
the
chart
to
summarize
the
whole
text.
Step
6
Discussion
T
asks
Ss
to
answer
the
following
questions:
?
What
makes
the
Amazon
rainforest
a
natural
treasure
according
to
the
script?
?
What
is
your
answer
to
the
question
at
the
end
of
the
script?
Discuss
it
with
your
partner.
2.
T
makes
a
conclusion.
T:
The
Amazon
rainforest
is
of
great
importance
to
us.
It
plays
a
significant
role
in
maintaining
the
fine
balance
of
the
Earth’s
ecosystem.
We
can’t
afford
to
damage
the
“lungs
of
the
planet”.
We
should
live
in
harmony
with
it.
Let’s
protect
it
together!
【设计意图：第一个问题让学生再一次把握全文的核心，使知识再现。第二个问题用教材上留下的问题作为结尾，让学生进行小组合作，开动大脑思考，大胆地说出理由，这不仅培养了学生的批判性思维能力，也是知识迁徙的过程。最后教师进行总结，对学生的价值取向进行正确的引导：人类要与自然和谐相处。】
V.
Homework
1.
Read
the
documentary
script
again
and
underline
the
difficult
points
that
you
cannot
understand.
2.
Are
there
any
places
in
China
with
rich
biodiversity
like
the
Amazon
rainforest?
What
are
they?
Go
to
the
library
or
surf
the
Internet
to
collect
some
relevant
information.
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1
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4
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