(共21张PPT)
Lesson
20
Looking
at
Photos
gift
idea
buy
surprise
take
how
much
how
many
Warm
up
flag
Lead
in
Presentation
①Do
you
remember?
你记得吗？
What
are
you
doing,
Li
Ming?
你正在做什么李明？
I'm
getting
ready
to
go
home
next
week.
我正在为下周回家做准备。
Presentation
Look!
I
found
these
photos!
看！我发现了这些照片！
find
/faind/
v.
发现，找到
过去式为
found
May
I
see
them?
我可以看看他们吗？
Sure.
当然。
Look
at
this
photo.
Danny
wanted
to
play
basketball
with
a
ping-pong
ball!
Danny
said
the
basketball
was
heavy.
Then
I
taught
him
to
play
ping-pong,
but
he
hit
his
hand.
Poor
Danny!
Danny
is
________
and
________,
but
he
________
too
________
to
________
the
basketball.
He
________.
To
play
basketball
with
a
___________
ball.
strong
healthy
was
weak
throw
wanted
ping-pong
Think
and
write
Look,
Li
Ming!
Here's
a
picture
of
you,
Danny
and
Santa.
Do
you
remember?
Oh,
yes!
I
went
to
the
shop
with
Danny.
We
bought
Christmas
gifts.
Then
we
saw
Santa.
We
talked
to
Santa.
go(went)
buy(bought)
see(saw)
talk(talked)
say(said)
want(wanted)
laugh(laughed)
ask(asked)
get(got)
have(had)
win(won)
lose(lost)
play(played)
invite(invited)
一般过去式
Let's
learn
动词过去式
的构成
规则动词
不规则动词
构成
读音
知识结构
一般过去时
构成
用法
常用时间
动词的过去式
1.表示过去某个时间发生
的动作或存在的状态。
2.表示过去经常或反复发
生的动作。
yesterday
last
night
in
1990
two
days
ago
规则动词过去式的构成
构成规则
1.
一般在动词原形末尾加
-ed
如：look→looked；play→played
2.
结尾是
e
的动词加
-d
如：like→liked；invite→invited
3.
末尾只有一个辅音字母的重读闭音节词，先双写这个
辅音字母，再加-ed
如：stop→stopped
4.
结尾是“辅音字母+y”的动词，先变
“y”为
“i”再加-ed
如：study→studied
规则动词加-ed的读音
1.清辅音后念
/t/
，例：asked,
helped,
laughed,
talked
2.元音和浊辅音后念
/d/
，例：played
called
3./t/
/d/
之后念
/?d/
,
即
ed
在
/t/
/d/
音后面念
/?d/，
例：wanted,
needed
am
is
(was)
are
(were)
become
(became)
begin
(began)
blow
(blew)
buy
(bought)
catch
(caught)
come
(came)
draw
(drew)
drive
(drove)
eat
(ate)
规则与不规则动词变化汇总:
fall
(fell)
feed
(fed)
fell
(felt)
fly
(flew)
forget
(forgot)
get
(got)
give
(gave)
go
(went)
grow
(grew)
have/has
(had)
ride
(rode)
know
(knew)
keep
(kept)
make
(made)
meet
(met)
run
(ran)
say
(said)
see
(saw)
sing
(sang)
sit
(sat)
1.填出下列单词过去式:
clean
________
wash
________
talk
________
want
________
laugh
________
am/is
________
are
________
cleaned
washed
talked
wanted
laughed
was
were
Exercise
2.运用所给单词的正确形式填空。
I________(go)
to
school
by
bike
yesterday.
Danny
usually_______(go)
to
school
by
bus.
They
never
_______（go）to
schoo
on
foot.
went
goes
go
Exercise
