(共20张PPT)
Unit
6
When
was
it
invented?
Section
B
(1a-1e)
Sweet
food
What
kind
of
food
do
you
like?
导入
salty
food
Sour
food
Crispy
food
一.
Learning
aims
(学习目标)
Grasp
the
language
points
Practice
listening
and
writing.
Learn
the
history
of
potato
chips.
二.
Important
and
difficult
points(重难点)
Retell
the
history
of
potato
chips
Unit
6
When
was
it
invented?
Section
B
(1a-1d)
自学指导
Describe
how
food
can
taste
Listen
to
the
tapes
and
answer
questions.
Retell
the
history
of
potato
chips
The
words
in
the
box
describe
how
food
can
taste.
Write
them
under
the
correct
pictures.
Some
pictures
have
more
than
one
word.
1a
Task
1
______
______
______
______
______
______
______
______
crispy
sour
salty
sweet
sweet
crispy
salty
sour
salty
adj.
脆的；酥脆的
adj.
酸的
adj.
咸的
sweet
____________________________
crispy
____________________________
salty
____________________________
sour
____________________________
discuss
the
name
of
a
different
food
after
each
word.
banana
apple
Beijing
Duck
potato
chips
1b
grape
candy
cookie
cheese
salted
fish
lemon
pairwork
Task2
.
Listen
to
the
tape
and
choose
the
right
answer
Listen
and
choose
1.
When
were
potato
chips
invented?
A.
In
1853
B.
In
1850
C.
In
1835
2.
Who
invented
the
potato
chips?
A.
A
customer
B.
A
chef
C.
A
boss
3.
Why
was
the
plate
of
fried
chips
sent
back(送回)?
A.
They
were
crispy.
B.
They
were
cut
thin(薄的).
C.
They
were
cut
too
thick（厚的）.
4.
What
did
people
think
of
the
thinly-sliced,
salty
chips?
A.
They
liked
them
very
much.
B.
They
no
longer
ate
them.
C.
They
hated
them.
听力（1）
Potato
chips
were
invented
by
mistake.
2.
They
were
invented
in
1863.
3.
The
customer
thought
the
potatoes
weren’t
thin
enough.
4.
The
customer
said
they
weren’t
salty
enough.
5.
George
wanted
to
make
the
customer
happy.
6.
The
customer
was
happy
in
the
end.
T
F
T
Listen
and
check
T
or
F
F
F
T
1853
thin
George
wanted
to
make
the
customer
hate
them.
听力（2）
1c
听力3
笔录要点：根据你听到的内容，填写下面文段中所缺的单词
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
拓展提升
mistake
n.
错误
by
mistake
错误地
I
took
his
backpack
by
mistake.
2.
v.
弄错;
误解
mistake
...
for
...
错把……当成……
Don't
mistake
me
for
an
American.
by?mistake与by
accident
1)
by?mistake意为“错误地”
I?took?her?umbrella?by?mistake?last?night
because?they?are?the?same?style．
昨晚我错拿了她的雨伞，因为它们的样式一样。
2)
by?accident意为“偶然地；意外地”
The?idea?came?to?him?by?accident．
很偶然地他想到了这个主意。
拓展提升
I’m?sorry?to?take?your?umbrella?_______?
yesterday;
here’s?the?umbrella．
A.
by?accident????
B.
by?the?way????
C.
by?guess??????
?D.
by?mistake
解析：by?accident意为“偶然地”，by
mistake意为“错误地”，by?the?way“顺便提
一下”。本句意为“很抱歉我昨天错拿了你的雨伞，这是那把雨伞”。
D
反馈小测
疯狂背诵
5分钟
Task
3
A:
Did
you
know
potato
chips
were
invented
by
mistake?
B:
…
A:Who
invented
them?
B:
…
A:When
was
that?
B:
…
A:Why
was
it
an
accident?
B:
…
A:
So
what
happened
B:
…
编写补全对话
1.
Make
a
conversation
about
the
invention
of
potato
chips
2.
完成一线课堂第三课时。
作业(Homework)
当堂训练
