Unit 6 When was it invented?(5课时 教案）

Unit
6　When
was
it
invented
Section
A(1a－2d)
【教学目标】
1.通过学习使学生掌握重点词汇及目标语言。
重点词汇：invent，invention，inventor，calculator
目标语言：A：When
was
the
telephone
invented
B：I
think
it
was
invented
in
1876.
A：Who
was
it
invented
by
B：It
was
invented
by
Bell.
A：What
was
it
used
for
B：It
was
used
for...
2.帮助学生认识主动语态与被动语态的区别并能正确使用一般过去时的被动语态谈论发明历史。
3.通过学习使学生懂得科学发明改变了人类生活。
【教学重难点】
重点：询问发明的时间、发明人及用途。
难点：使用过去时的被动语态谈论发明历史。
【课前准备】
重要发明的发明者和发明时间的资料。制作多媒体课件、学案。
┃教学过程设计┃
　　一、创设情境，切入主题Step
1：Lead inShow
pictures
of
the
( http: / / www.21cnjy.com )
four
great
inventions.Say“Today
we
are
going
to
talk
about
inventions.Do
you
know
what
an
invention
is？These
are
the
four
great
inventions
in
ancient
China.They
were
invented
a
long
time
ago.”Show
some
pictures
about
modern
inventions(computer，television，telephone
and
car).
Tell
students
that
all
of
these
things
were
invented
in
the
last
150
years，Point
to
each
picture
and
let
students
tell
what
it
is.Then
write
the
names
of
the
inventions.设计意图：通过图片帮助学生理解invention的含义，引出更多发明名称，为下一步谈论发明做好词汇准备。
　　二、展开过程，探究新知Step
2：Work
on
1a1.Ask
students
to
thi
( http: / / www.21cnjy.com )nk
about
the
following
questions：Can
you
guess
which
one
of
them
was
invented
first？Which
one
of
them
was
invented
last？Was
the
TV
invented
before
the
car
or
after
the
car Have
the
students
loo
( http: / / www.21cnjy.com )k
at
the
sample
conversation
in
the
box.Ask
two
students
to
read
this
conversation
to
the
class.Ask
several
groups
to
tell
the
class
their
answers.2.Call
the
st
( http: / / www.21cnjy.com )udents’attention
to
the
pictures.Have
students
guess
and
write
the
dates
on
the
blackboard.设计意图：先通过让学生猜测发明的先后顺
( http: / / www.21cnjy.com )序，激发学生的好奇心和求知欲，同时引出句型I
think
it
was
invented
before/after...为后面的学习做知识和语言的铺垫。Step
3：Listen
to
1b1.Call
the
studen
( http: / / www.21cnjy.com )ts’attention
to
the
inventions
in
the
picture.Ask
four
students
to
say
the
names
of
them.
Then
ask
them
to
see
the
dates
with
a
blank
line
in
front
of
each.Read
the
dates
together.Then
say
“We’ll
l
( http: / / www.21cnjy.com )isten
to
a
conversation
between
a
girl
and
a
lady.What
are
they
talking
about？”(Inventions
and
years)2.In
the
conversation
( http: / / www.21cnjy.com )they
will
talk
about
when
these
things
were
invented.Listen
carefully
and
match
the
inventions
with
the
years.3.Check
the
a
( http: / / www.21cnjy.com )nswers.Help
students
to
answer
like
this：The
telephone
was
invented
in
1876.4.Then
play
( http: / / www.21cnjy.com )the
recording
again.Pause
after
each
sentence
and
let
students
repeat.Step
4：Work
on
1cRead
the
instructio
( http: / / www.21cnjy.com )ns
and
point
to
the
list
of
dates
in
Activity
1b.Call
the
students’attention
to
the
example
in
the
box.Ask
a
pair
of
the
students
to
read
this
conversation
to
the
class.Ask
several
pairs
to
share
their
conversations
with
the
class.设计意图：利用听力内容给学生提供开口表达的机会，使学生进一步理解并运用目标语言。Step
5：PairworkShow
the
first
pict
( http: / / www.21cnjy.com )ure
and
ask
What
is
this
called
in
English？Help
students
to
answer
It’s
called
a
TV.Then
ask
the
questions
and
help
the
students
to
answer
like
this：T：When
was
it
invented S：It
was
invented
in... T：Who
was
it
invented
by S：It
was
invented
by...Show
other
pictures
to
let
students
make
up
similar
conversations.设计意图：引出新的语言知识及新的功能句型Who
was
it
invented
by Step
6：Work
on
2a－2b－2cListen
again
and
answer
some
questions.设计意图：听前利用图片介绍生词并引
( http: / / www.21cnjy.com )入核心句型。完成教材听力活动后，设计四个问题一方面帮助学生进一步理解听力材料，另一方面又给学生提供了练习本课功能句型的机会，最后的对子活动给学生提供口头表达的练习。Step
7：Work
on
2d1.Show
a
picture
of
( http: / / www.21cnjy.com )a
zipper.Say
“What
is
this？”
and
teach
the
word
Zipper.Write
it
down
on
the
blackboard.And
ask
“Where
can
you
see
a
zipper？”Collect
the
answers
and
write
them
down.(pants，trousers，bags，backpacks，dressers，shoes，suitcase，etc.)2.Who
invented
the
( http: / / www.21cnjy.com )
zipper？(Who
was
the
zipper
invented
by？)Read
the
conversation
and
find
out
the
answer.If
you
find
the
answer，please
put
up
your
hands.3.Play
the
tape
for
students
to
listen
and
repeat.4.Role play
the
con
( http: / / www.21cnjy.com )versation
in
pairs.Then
ask
some
pairs
to
act
out
their
conversations.
　　三、布置作业1.Recite
the
conversation
in
2d.2.Write
a
conversation
about
an
invention.3.Finish
workbook
exercises.
┃教学小结┃
【板书设计】
Unit
6　When
was
it
invented
Section
A(1a－2d)
1.The
names
of
the
inventions：
computer，car，telephone，TV
2.Target
language：
A：When
was
the
telephone
invented
B：I
think
it
was
invented
in
1876.
A：Who
was
it
invented
by
B：It
was
invented
by
Bell.
A：What
was
it
used
for
B：It
was
used
for...
Section
A(3a－4c)
【教学目标】
1.学习掌握下列词汇：by
a
( http: / / www.21cnjy.com )ccident，ruler，boil，remain，smell，saint，national，take
place，doubt，without
doubt。
2.阅读短文了解茶叶发明发展的过程，能按要求找到相应的信息并能恰当地使用被动语态完成相关练习。
3.帮助学生运用predicting，skimming，scanning等阅读策略提高阅读技能。
【教学重难点】
重点：1.掌握本部分出现的词汇，并能熟练运用。
2.阅读短文，获得相关的信息。通过阅读练习，来提高阅读能力。
难点：阅读短文，获得相关的信息，并运用被动语态谈论发明。
【教学准备】
搜集有关茶的资料、多媒体课件、学案。
┃教学过程设计┃
　　一、创设情境，切入主题Step
1：Lead inTalk
about
tea
with
( http: / / www.21cnjy.com )
students.How
many
kinds
of
drinks
do
you
know？Can
you
name
some
What’s
the
most
popular
drink
in
the
world？(Tea)How
much
do
you
know
about
tea
How
many
kinds
of
tea
do
you
know 设计意图：通过展示图片，利用学生熟悉的话题导入新课。
　　二、展开过程，探究新知Step
2：Work
on
3a－3c1.Look
through
the
ti
( http: / / www.21cnjy.com )tle
and
the
picture.Guess
what
it
is
about？(We
can
know
from
the
title
that
the
invention
is
tea
and
the
invention
is
an
accident.)设计意图：训练学生的快速阅读技能。2.Scan
the
answers
for
the
following：·When
was
tea
first
drunk ·How
was
tea
invented ·Who
is
called
“the
saint
of
tea”？·What
is
Cha
Jing
about ·When
was
tea
brought
to
other
countries While
students
working，the
teacher
moves
around
to
offer
help.设计意图：细读文章。了解细节。3.3c.Complete
( http: / / www.21cnjy.com )the
sentences
with
the
correct
forms
of
the
verbs
in
the
box.4.Underline
the
words
that
are
used
to
describe
tea.设计意图：首先通过图片介绍背景知识，呈
( http: / / www.21cnjy.com )现词汇然后通过设问引导学生用略读、寻读、细读等方式。通过快速阅读、细读文章并回答与茶叶有关的细节问题，逐渐获取语篇信息并能口头进行表达，并完成词汇和语言结构的巩固性练习，将听说读写的活动结合起来训练学生综合运用语言的能力。Step
3：Grammar
Focus1.观察与思考Grammar
Focu
( http: / / www.21cnjy.com )s中的句子What
are
the
differences
between
them？________两栏谓语部分的结构有什么不同？两栏例句中句子主语有什么变化？两种不同谓语结构的表意功能有什么不同？
Active
voicePassive
voiceWhitcomb
Judson
invented
the
zipper
in
1893.The
zipper
was
invented
by
Whitcomb
Judson
in
1893.People
brought
tea
to
Korea
during
the
6th
and
7th
centuries.Tea
was
brought
to
Korea
during
the
6th
and
7th
centuries.Alexander
Graham
Bell
invented
the
telephone
in
1876.The
telephone
was
invented
by
Alexander
Graham
Bell
in
1876.We
used
the
hot
ice cream
scoop
for
serving
really
cold
ice cream.The
hot
ice cream
scoop
was
used
for
serving
really
cold
ice cream.2.Sum
up
the
rules主动句变为被动句所遵循的四个步骤：(1)把原主动句中的宾语变为被动句的主语。(2)把动词变为被动形式即be＋过去分词，并注意其人称和数随主语的变化，而动词的时态则保持不变。(3)原主动句的主语如需要则放在by后面以它的宾格形式出现(注代词的宾格)，如不需要则可省略。(4)其他的成分(定语、状语)不变。过去式被动语态的几种句型肯定句
主语＋be＋过去分词＋(by...)A
sweet
song
was
sung
by
her
on
the
stage.否定句
主语＋be＋not＋过去分词＋(by...)A
sweet
song
wasn’t
sung
by
her
on
the
stage.一般疑问句　Be＋主语＋过去分词＋(by...)？Was
a
sweet
song
sung
by
her
on
the
stage？3.情景演练Show
the
following
pictures.(1)How
delicious
the
soup
is！Who
cooked
it？It
was
cooked
by
Mom.(2)What
a
beautiful
card
it
is！Who
made
it？It
was
made
by...(3)How
clean
the
clothes
are！Who
washed
them？They
were
washed
by...设计意图：在学生通过观察句子结构，接触了一定量的被动句后引导学生总结归纳主动句变被动句的规律。创设情景引导学生模仿运用被动句进行表达。Step
4：Work
on
4aRewrite
the
sentences
using
the
passive
voice.1.Go
over
the
instru
( http: / / www.21cnjy.com )ctions
and
make
sure
they
understand
what
they
should
do.Read
the
sentences
and
then
ask
them
to
rewrite
the
sentences.Ask
two
students
to
write
theirs
on
the
blackboard.While
students
are
writing，teacher
moves
around
to
offer
help.2.Then
ask
students
to
exchange
their
work
to
check
the
answers.Step
5:
Work
on
4bComplete
the
sentences
with
correct
forms
of
the
verbs
in
the
box.Step
6：Work
on
4cWrite
the
correct
forms
in
the
blanks.设计意图：4a－4c活动为学生提供笔头上运用被动语态的练习。
　　三、布置作业1.Retell
the
story
of
the
invention
of
tea.2.Finish
the
exercises
for
this
part.
┃教学小结┃
【板书设计】
Unit
6　When
was
it
invented
Section
A(3a－4c)
1.An
Accidental
Invention
When
was
tea
first
drunk
How
was
tea
invented
Who
is
called
“the
saint
of
tea”？
What
is
Cha
Jing
about
When
was
tea
brought
to
other
countries
2.The
Passive
Voice：Be＋动词的过去分词形式
Section
B(1a－1e)
【教学目标】
1.完成听说活动，了解美食的发明史。
2.掌握本课出现的重点短语和句子。
3.能用被动语态谈论美食的发明史。
【教学重难点】
重点：能掌握下列句型。
难点：能利用下列句型谈论美食的发明。
1.The
customer
was
happy
in
the
end.
2.Do
you
know
how
potato
chips
were
invented
3.—Did
you
know
potato
chips
were
invented
by
mistake
—Wow，I
didn’t
know
that.Who
invented
them
【课前准备】
薯片等美食的发明故事、多媒体课件、学案。
┃教学过程设计┃
　　一、创设情境，切入主题Step
1：L
( http: / / www.21cnjy.com )ead inShow
students
some
pictures
about
the
delicious
food.How
do
they
taste
Help
them
understand
the
following
adjectives：crispy，salty，sour
and
sweet.
　　二、展开过程，探究新知Step
2：Work
on
1a1.Read
the
instruc
( http: / / www.21cnjy.com )tions
to
the
class.Point
out
the
four
adjectives
on
the
left.2.Have
them
read
th
( http: / / www.21cnjy.com )e
four
words
together.Then
ask
some
different
students
to
read
them.Ask
students
to
choose
the
words
in
the
box
to
describe
how
the
food
in
the
pictures
tastes.Write
them
under
the
correct
pictures.设计意图：利用几种事物的图片及练习帮助学生理解掌握生词。step
3：Work
on
1b
1.Point
out
the
four
words.Then
point
to
the
sample
answer
given.2.Ask
students
to
complete
the
activity
on
their
own.3.After
they
all
fin
( http: / / www.21cnjy.com )ish
writing，ask
some
students
to
read
their
answers
to
the
class.Check
the
answers
with
the
whole
class.设计意图：通过口语活动帮助学生在运用中进一步理解、巩固词汇。Step
4：Work
on
1c－1dBefore listeningLet
students
read
( http: / / www.21cnjy.com )
the
instructions
together.Be
sure
that
they
all
know
what
to
do.And
help
them
to
understand
the
words
customer
and
by
mistake.Ask
students
to
look
at
the
sample
answers.1.While listeningPlay
the
recording
first.Students
only
listen
to
catch
the
main
idea.2.Play
the
recordi
( http: / / www.21cnjy.com )ng
again.Ask
the
children
to
listen
and
circle
T
for
true
or
F
for
false.3.Check
the
answers
with
the
whole
class.4.Point
to
the
blan
( http: / / www.21cnjy.com )ks
in
the
sentences
in
the
story
and
tell
them
to
complete
the
sentences
while
they
are
listening.Encourage
students
to
fill
in
the
blanks
before
listening.5.Play
the
rec
( http: / / www.21cnjy.com )ording
again.Ask
students
to
fill
in
the
blanks
with
the
words
they
hear.设计意图：听前鼓励学生大胆预测使学生在听中关注重点内容。听后通过设问帮助学生对文本进行深度理解。Step
5：Work
on
1eMake
a
conversation
about
the
invention
of
potato
chips.Step
6：Free
talkTalk
about
ot
( http: / / www.21cnjy.com )her
food
you
know.What’s
the
name
of
the
food
Who
was
it
invented
by？How
was
it
invented
Talk
about
it
in
groups
of
four.设计意图：通过小组活动使学生运用并模仿听力文本内容讲述美食的发明，学生能使用被动语态句型进行表达。
　　三、布置作业1.Finish
the
workbook
exercises.2.Tell
the
story
of
the
invention
of
potato
chips.3.Write
a
passage
of
another
invention
of
food.
┃教学小结┃
【板书设计】
Unit
6　When
was
it
invented
Section
B(1a－1e)
words：salty，sour，crispy，sweet
SA：Did
you
know
potato
chips
were
invented
by
mistake
SB：Wow，I
didn’t
know
that.Who
invented
them
SA：They
were
invented
by
a
cook
called
George
Crum.
Section
B(2a－2e)
【教学目标】
1.阅读短文，了解篮球发明的过程。
2.培养学生运用思维导图记忆语篇信息的能力。
【教学重难点】
重点：阅读短文，了解篮球发明的历史。
难点：运用思维导图记忆语篇信息。
【教学准备】
有关篮球的图片视频、课件、学案。
┃教学过程设计┃
　　一、创设情境，切入主题Step
1：Lead inShow
a
picture
of
a
b
( http: / / www.21cnjy.com )asketball.What
sport
is
it？Do
you
watch
basketball
games
How
much
do
you
know
about
this
sport
Then
collect
the
answers.Present
some
new
words
about
basketball.设计意图：读前讨论有关篮球的话题，激活学生已有图式，为启动阅读做好准备。
　　二、展开过程，探究新知What
other
things
do
y
( http: / / www.21cnjy.com )ou
want
to
know
about
basketball
Write
down
your
answers.Let’s
read
the
passage
and
find
what
you
want
to
know.设计意图：通过谈论篮球知识激发学生探究的兴趣，同时也是对语篇内容的预测。Step
2：Work
on
2bFast
ReadingTell
students
to
read
( http: / / www.21cnjy.com )the
passage
quickly.And
find
the
main
idea
of
each
paragraph.设计意图：快速阅读文本，帮助学生使用略读方式了解段落的主旨大意，帮助学生了解语篇的主要结构。Step
3：Careful
ReadingT：Now
let’s
re
( http: / / www.21cnjy.com )ad
the
mind
map
in
2c.Try
to
understand
the
meaning
of
it.Ask
students
to
( http: / / www.21cnjy.com )complete
the
mind
map
with
the
information
in
the
passage.Changing
the
informat
( http: / / www.21cnjy.com )ion
you
read
into
a
mind
map
may
help
you
remember
it
more
easily.设计意图：通过任务引导学生采用寻读的方式阅读文章获取文章细节。逐步构建思维导图。Step
4：Work
on
2dThen
try
to
read
th
( http: / / www.21cnjy.com )e
passage
again
and
find
the
answers
to
the
questions
of
2d.Step
5：ActivityWhat
have
you
kno
( http: / / www.21cnjy.com )wn
after
the
reading？Encourage
students
to
try
their
best
go
say
as
much
as
they
can.Step
6：Work
on
2e1.Ast
students
w
( http: / / www.21cnjy.com )hat
they
think
of
famous
basketball
players.Make
a
list
of
good
and
difficult
things
about
being
a
basketball
player.2.Students
work
in
( http: / / www.21cnjy.com )groups.Discuss
them
with
their
partners
and
make
a
list.3.Let
some
groups
read
their
lists.设计意图：训练学生的辩证思维能力。对学生进行价值观的引导。
　　三、布置作业Write
a
short
passage
about
the
development
of
basketball.
┃教学小结┃
【板书设计】
Unit
6　When
was
it
invented
Section
B(2a－2e)
Do
you
know
when
basketball
was
invented
Section
B(3a－Self
check)
【教学目标】
1.能够正确使用目标语言完成写的练习。
2.复习巩固本单元所学的词汇和语法知识。
3.鼓励学生保持对发明探索的兴趣。
【教学重难点】
重点：正确使用目标语言完成相应的练习。
难点：正确使用目标语言描述一项新发明。
【课前准备】
制作多媒体课件、学案。
┃教学过程设计┃
　　一、创设情境，切入主题Step
1：Lead inShow
pictures
about
cool
inventions
to
the
students.
　　二、展开过程，探究新知Ask
students
to
d
( http: / / www.21cnjy.com )iscuss
the
inventions
in
pairs.Use
the
following
questions
to
guide
the
students
to
talk
about
the
inventions
and
create
the
mind
maps.设计意图：利用本单元话题思维导图引导学生谈论发明，帮助学生运用目标语言结构进行表达同时又训练学生的创造性思维，为后面的写作做好铺垫。Step
2：Work
on
3a
In
our
life
we
may
( http: / / www.21cnjy.com )
have
problems
doing
something.Or
there
is
something
we
don’t
like
to
do.Think
of
an
inventi
( http: / / www.21cnjy.com )on
that
could
help
you
and
complete
your
own
writing.After
the
students
finish
the
writing，ask
one
or
two
students
to
read
theirs.设计意图：发明的灵感往往来自解决生活中的困难，让学生列出要解决的问题，可以激发学生思考写作的内容。Step
3：Work
on
3b1.Imagine
yo
( http: / / www.21cnjy.com )u
are
a
business
person.Write
a
description
of
your
new
invention.Try
to
sell
the
invention
to
the
class.2.Ask
the
students
to
share
the
descriptions
with
their
partner.3.Ask
the
student
( http: / / www.21cnjy.com )s
to
provide
constructive
feedback
to
their
partners.设计意图：鼓励学生大胆想象放开思维，引导学生使用本单元词汇与结构描述自己的发明，鼓励学生保持对科学发明探索的兴趣。Step
4：Self
Check
11.Make
sure
( http: / / www.21cnjy.com )the
students
understand
what
they
should
do
in
this
part.Ask
the
students
to
complete
the
passage.2.Discuss
the
answers
in
pairs.3.Check
the
answers
with
the
whole
class.4.Read
the
passage
aloud.设计意图：以语篇的形式，帮助学生结合语境练习本单元重点词汇和语言结构。Step
5：Self
Check
2Ask
students
read
( http: / / www.21cnjy.com )
the
sentences
first，and
then
ask
them
to
turn
the
sentences
into
passive
voice.Ask
two
students
to
write
down
their
answers
on
the
blackboard.Then
check
the
answers
together.设计意图：帮助学生复习巩固被动语态的构成。Step
6：Self
Check
3Ask
the
students
to
finish
it.设计意图：结合发明的话题给学生足够的空间巩固和运用本单元词汇及语言结构。
　　三、布置作业熟读并背诵Self
Check
1。
┃教学小结┃
【板书设计】
Unit
6　When
was
it
invented
Section
B(3a－Self
Check)