(共31张PPT)
Unit
6
When
was
it
invented？
人教新目标版
九年级上
SectionB
1a-1e公开课
Warming
up
Life
is
full
of
delicious
food!
Lead-in
Presentation
sour
sweet
bitter
spicy
salty
crispy
Presentation
--How
do
they
taste
--They
taste…
Words
to
describe
the
food
酸的
甜的
苦的
辣的
咸的
脆的
新鲜的
软的
硬的
多汁的
健康的
厚的
薄的
好吃的
sour
sweet
bitter
hot/spicy
salty
crispy
fresh
soft
hard
juicy
healthy
thick
thin
delicious
Sweet
food
Brainstorm
salty
food
Sour
food
Crispy
food
The
words
in
the
box
describe
how
food
can
taste.
Write
them
under
the
correct
pictures.
Some
pictures
have
more
than
one
word.
1a
sweet
crispy
salty
sour
________
__________
______
________
crispy
salty
sour
sweet
salty
Write
the
name
of
a
different
food
after
each
word.
1b
sweet
crispy
salty
sour
apple;
orange;
cake;
honey;
candy;
biscuit
......
French
fries;
lettuce;
popcorn;
potato
chips;
......
pizza;
potato
chips;
salt;
salty
fish
pickle腌菜
......
grape;
vinegar醋;
orange;
lemon;
pickle腌菜;
strawberry
......
Using
adjectives
to
make
conversations.
salty
咸的,含盐的
sweet
甜的
crispy
易碎的,脆的
sour
酸的,酸味的
bitter
苦的
hot
辣的
awful
可怕的
nice
好的
delicious
美味的
A:
What
food
is
sour
B:
I
think
pineapples
are
sour.
What
food
is
crispy
A:
…
…
Pairwork
Pre-listening
What
are
they
doing
They
are
talking
about
potato
chips.
Do
you
know
how
potato
chips
were
invented
Listen
and
circle
T
for
true
or
F
or
false.
1c
1.
Potato
chips
were
invented
by
mistake.
2.
They
were
invented
in
1863.
3.
The
customer
thought
the
potatoes
were
not
thin
enough.
4.
The
customer
said
they
were
not
salty
enough.
5.
George
wanted
to
make
the
customer
happy.
6.
The
custom
was
happy
in
the
end.
T
F
T
F
T
F
T
F
T
F
T
F
n.
顾客
无意中
最后，终于
Language
points
by
mistake为介词短语，意为“无意中；错误地”,相当于accidentally。
【语境领悟】I
missed
the
school
bus
by
mistake
this
morning.
今天早上我无意中错过了校车。
I
took
your
pen
by
mistake.
我错拿了你的钢笔。
mistake
1.
n.
错误。make
a
mistake/make
mistakes犯错误
I
used
to
make
mistakes
in
spelling．我过去常常犯拼写错误。
2.
v.
弄错;
误解
You
mistook
my
meaning
entirely.你完全误解了我的意思。
mistake
...
for
...
错把……当成……
Don't
mistake
me
for
an
American.不要把我误会成美国人。
单词enough修饰名词时，不需要倒装。
如：我有足够的钱。I
have
enough
money.
【拓展】
enough其修饰形容词、副词要倒装。
如：He
wrote
carefully
enough
to
get
the
award
of
the
competition.
enough常可以和词组so-that，too-to转换。
他跑得不够快，赶不上其他人了。
He
didn’t
run
fast
enough
to
catch
up
with
the
others.
=He
ran
so
slowly
that
he
couldn’t
catch
up
with
the
others.
=He
ran
too
slowly
to
catch
up
with
the
others.
in the end
最后，终于
(相当于finally
或
at
last)
【拓展】
at the end of可以指时间，也可指处所，意为“在……尽头，在……结束时”。
by the end常和of相连，用于指时间，意为“到……底(末)为止”
【学以致用】1.他在花园的尽头的那边。
He
is
down
_______________
the
garden.
2.最后，我们找到了这座房屋。
______________
we
found
the
house.
3.到战争结束时,
这个小铺子已经变成有728个工人的大厂了。
_____________________,
the
small
work-shop
had
become
a
large
factory
with
728
workers.
at
the
end
of
In
the
end
By
the
end
of
the
war
Listen
again
Complete
the
sentences.
1d
The
History
of
Potato
Chips
Do
you
know
how
potato
chips
were
invented
Potato
chips
_____________
by
a
cook
called
George
Crum.
They
were
invented
in
________.
George
Crum
cut
the
potatoes
really,
really______
and
then
cooked
them
for
a
long
time
until
they
were
_________.
Finally
he
put
lots
of
salt
on
them
so
they
were
___________.
were
invented
1853
thin
crispy
really
salty
Listen
again
and
fill
in
the
card.
Who
invented:__________
When
invented
:__________
How
invented
:__________
Process:_______________________________________________________________________________________________________________________
George Crum
1853
by mistake
cut the potatoes really, really thin
cooked them for a long time until they were crispy
put lots of salt on them so they were really salty
Listen
again
and
complete.
Boy
1:Hey,did
you
know
that
potato
chips
were
invented
__________
Boy
2:
Really
What
do
you
mean
Boy
1:
Well,
here
on
the
bag
it
says
that
they
were
invented
_______________
George
Crum.
Boy
2:
When
was
that
Boy
1:
Oh,
it
was____________
.
Boy
2:
So,
why
was
it
____________
Boy
1:
Well,
one
day
a
customer
came
in
the
restaurant
where
George
worked.He
ordered
__________________
.When
the
potato
came,
he
said
they
were
cut
__________
and
sent
them
back
to
the
kitchen.
by
mistake
by
a
cook
called
back
in
1853
an
accident
a
plate
of
fried
potatoes
too
thick
Boy
2:
So
what
happened
Boy
1:
Well,
George
was
angry
so
he
cut
the
potatoes
really,
really
thin,
and
he
cooked
them
for
a
long
time___________________
.
And
he________________
them
so
they
were
really
salty
.
He
thought
the
customer
would
hate
them.
Boy
2:
And
Boy
1:
And
the
customer
loved
them
and
________________
.
He
told
the
other
customers
about
them,
and
soon
everyone
was
ordering
thinly-cut,
____________potato
chips.
Boy
2:
And
we're
still
eating
them
today.
What
a
cool
story!
Boy
1:
Yeah.
until
they
were
crispy
put
lots
of
salt
on
asked
for
more
crispy,
salty
1.
Who
invented
potato
chips
2.
When
were
they
invented
3.
What
did
the
custom
order
at
the
restaurant
They
were
invented
by
a
cook
called
George
Crum.
In
1853.
He
ordered
a
plate
of
fried
potatoes.
Answer
the
questions.
5.
How
did
George
cook
the
potatoes
then
4.
What
did
the
custom
think
of
the
potato
chips
George
cooked
at
first
He
cut
the
potatoes
really,
really
thin
and
cooked
them
for
a
long
time
until
they
were
crispy.
And
he
put
lots
of
salt
on
them
so
they
were
really
salty.
He
thought
they
were
cut
too
thick.
Let's
read
and
check
your
answers.
Boy
1:Hey,did
you
know
that
potato
chips
were
invented
by
mistake
Boy
2:
Really
What
do
you
mean
Boy
1:
Well,
here
on
the
bag
it
says
that
they
were
invented
by
a
cook
called
George
Crum.
Boy
2:
When
was
that
Boy
1:
Oh,
it
was
back
in
1853.
Boy
2:
So,
why
was
it
an
accident
Boy
1:
Well,
one
day
a
customer
came
in
the
restaurant
where
George
worked.He
ordered
a
plate
of
fried
potatoes.When
the
potato
came,
he
said
they
were
cut
too
thick
and
sent
them
back
to
the
kitchen.
追溯到1853年
Boy
2:
So
what
happened
Boy
1:
Well,
George
was
angry
so
he
cut
the
potatoes
really,
really
thin,
and
he
cooked
them
for
a
long
time
until
they
were
crispy
.
And
he
put
lots
of
salt
on
them
so
they
were
really
salty
.
He
thought
the
customer
would
hate
them.
Boy
2:
And
Boy
1:
And
the
customer
loved
them
and
asked
for
more.
He
told
the
other
customers
about
them,
and
soon
everyone
was
ordering
thinly-cut,
crispy,
salty
potato
chips.
Boy
2:
And
we're
still
eating
them
today.
What
a
cool
story!
Boy
1:
Yeah.
(被)切得很薄的
Make
a
conversation
about
the
invention
of
potato
chips.
Use
the
information
in
1c
and
1d.
1e
A:
Did
you
know
potato
chips
were
invented
by
mistake
B:
Wow,
I
didn’t
know
that.
Who
invented
them
A:
George
Crum
did.
It
was
invented
by
the
cook.
B:
How
did
he
invent
them
A:
…
B:
Why
did
he
do
it
like
that
A:
…
B:
What’s
the
result
A:
…
When
Who
How
Why
As
a
result
in
1853
a
cook
called
George
Crum
by
accident,
----sent
back---,
because---.
But
---in
a
bad
mood,
so
---cut----and
cooked
---for---until----.And---put
---on
---so-----.
He
thought
the
customer
would
hate
them.
The
customer
loved
them
so
much
that
he
asked
for
more.
he
told---.
So
-
ordered----
Fill
in
the
blanks
and
retell.
Post
listening
If
we
are
good
at
observing
and
thinking,everyone
can
be
inventors
in
our
lives.
如果我们善于观察，勤于思考，
每个人都能成为生活中的发明家。
https://www.21cnjy.com/help/help_extract.php中小学教育资源及组卷应用平台
Unit
6
When
was
it
invented
SectionB1a—1e
导学案
【学习目标】
1.
To
learn
some
words
to
describe
how
food
can
taste：crispy,
sour,
sweet,
salty
2.
To
listen
for
specific
information
3.
To
talk
about
the
history
of
potato
chips,
using
passive
voice
Did
you
know
potato
chips
were
invented
by
mistake
【学习重难点】
重点:
重点单词及短语。
难点:
To
know
how
potato
chips
were
invented.
【自主预习】
一.
请根据中文意思写出下列重点单词。
1.
脆的；酥脆的
adj.______
2．咸的
adj.
______
3．酸的；有酸味的
adj.
______
4．顾客；客户
n．_______
二.
请认真阅读课本，找出下列重点短语。
5.
无意中；错误地
____________
6．足够薄
__________
三.
请用以上重点短语完成下列句子。
7．你知道薯片是无意中被发明的吗？
Did
you
know
potato
chips
were
invented
________
_______
8．顾客认为土豆不够薄。
The
customer
thought
the
potatoes
were
not
_________
________．
【合作探究】
Listening
practice
1b&1c&1d
2.Listen
again
and
fill
in
the
card.
Who
invented:__________
When
invented
:__________
How
invented
:__________
Process:_______________________________________________________________________________________________________________________
3.Listen
and
complete.
Boy
1:Hey,did
you
know
that
potato
chips
were
invented
__________
Boy
2:
Really
What
do
you
mean
Boy
1:
Well,
here
on
the
bag
it
says
that
they
were
invented_______________
George
Crum.
Boy
2:
When
was
that
Boy
1:
Oh,
it
was____________
.
Boy
2:
So,
why
was
it
____________
Boy
1:
Well,
one
day
a
customer
came
in
the
restaurant
where
George
worked.He
ordered
__________________
.When
the
potato
came,
he
said
they
were
cut
__________
and
sent
them
back
to
the
kitchen.
Boy
2:
So
what
happened
Boy
1:
Well,
George
was
angry
so
he
cut
the
potatoes
really,
really
thin,
and
he
cooked
them
for
a
long
time___________________
.
And
he________________
them
so
they
were
really
salty
.
He
thought
the
customer
would
hate
them.
Boy
2:
And
Boy
1:
And
the
customer
loved
them
and
________________
.
He
told
the
other
customers
about
them,
and
soon
everyone
was
ordering
thinly-cut,
____________potato
chips.
Boy
2:
And
we're
still
eating
them
today.
What
a
cool
story!
Boy
1:
Yeah.
4.Try
to
answer
the
questions
below.
1).
Who
invented
potato
chips
2).
When
were
they
invented
3).
What
did
the
custom
order
at
the
restaurant
4).
What
did
the
custom
think
of
the
potato
chips
George
cooked
at
first
5).
How
did
George
cook
the
potatoes
then
5.Let's
complete
the
blanks
according
to
the
conversation.
The
History
of
Potato
Chips
Do
you
know
how
potato
chips
were
invented
Potato
chips
_______
_______by
a
cook
called
George
Crum.
They
were
invented
in
_______.One
day,
a
customer
came
into
the
restaurant
where
George
worked
and
_______a
plate
of
fried
potatoes.
The
cook
called
George
cooked
them
for
him.
When
the
potatoes
came,
he
said
they
were
_____
too
thick
and
sent
them
back
to
the
kitchen.
George
was
angry,
so
he
cut
the
potatoes
really,
really_____,
and
he
cooked
them
for
a
long
time
until
they
were
_______.
Finally
he
put
lots
of
salt
on
them
so
they
were
really__________.
He
thought
the
customer
would
______
them.
However,
after
eating,
the
customer
loved
them
and
asked
for
______.
He
told
the
other
customers
about
them,
and
soon
everyone
was
ordering
thinly
cut,
crispy,
salty
potato
chips.
6.知识点探究。
1.
by
mistake
错误地，是介词短语，意为“错误地；无意地；不小心地”，指由于错误的判断而造成的失误，常在句中作状语。
mistake...for…把…错认为,
错把…当作;
make
a
mistake/
mistakes
“犯错误”。
2.
in
the
end
,at
the
end
of,
by
the
end
of.
in
the
end
“最后，终于”，与at
last、finally同义。
at
the
end
of…
“在……尽头”，“在……结束时”。
by
the
end
of…“到……为止，到……时候”，常与将来时态或过去完成时态连用。
同步练习
1.
我错拿了我朋友的书。
I
____________
my
friend’s
book
____________
____________.
2.
你越仔细，犯的错误就会越少。
The
__________
careful
you
are,
the
____________
____________
you’ll
make.
(
)3.
He
succeed
in
climbing
the
top
of
the
mountain
_____.
A.
at
the
end
B.
to
the
end
C.
by
the
end
D.
in
the
end
温馨提示
“名词+-y”构成形容词
cloud---cloudy,
wind---windy,
rain---rainy,
sleep---sleepy,
salt---salty,…
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