(共19张PPT)
Unit
10
I've
had
this
bike
for
three
years.
Section
A
(4a-4c)
Lead
in
How
long
have
you
had
that
bike
over
there?
Summary
现在完成时用法(二)
此用法需注意两点:
1)常与for,
since引导的时间段的时间状语连用。
2)动词使用延续性动词。
since
,
for
的用法:
since:
自…...以来
1)since+时间点
He?has?stayed?here?since?5?o’clock.
2)since+
时间段+
ago
He?has?stayed?here?since?5?hours?ago.
3)since+
从句(句子要用一般过去时态)
She?has?taught?English?since?he?came?here.
for:
(长达)for+
时间段
He
has
kept
the
book
for
2
weeks.
since+一段时间+ago=for+时间段;
since
two
weeks
ago=for
two
weeks;
I
have
kept
the
library
book
for
a
week.
=
I
have
kept
the
library
book
since
a
week
ago.
在现在完成时态中,for与since引导的时间
状语可以相互转换。
It
is
+
时间段
+since
+一般过去时的句子.
1.他的爷爷已经去世2年了。
2.Nick参军三年了。
3.他离开深圳好长时间了。
4.这本书我已借了4个月了。
It
is
2
years
since
his
grandpa
died.
It
is
3
years
since
Nick
joined
the
army.
It
is
a
long
time
since
he
left
Shenzhen.
It
is
4
months
since
I
borrowed
the
book
.
含有for,since的现在完成时的用法歌诀:
过去的动作或状态,一直持续到现在,for,since
把时间带。
歌诀
常见非延续性动词和延续性动词的转变
第一类:短暂性动词
be
+
adj.
die
finish
open/close
marry
sb/get
married
to
第二类:短暂性动词
be
+
介词
start/begin
leave
join
be
dead
be
away
from
be
in/be
a
member
of
be
open/closed
be
on
be
over
be
married
to
第三类:短暂性动词
另一个动词
buy
borrow
become
put
on
keep
have
be
wear
巧记瞬间性动词的转换:
开始离去借来还,
出生入死买到家,
穿衣入睡要感冒,
开开关关变结束。
1
begin
be
on
6
return
be
back
2
leave
be
away
from
7
join
be
in
3
go
be
off
8
die
be
dead
4
borrow
keep
9
buy
have
5
come
be
here
10
arrive
be
here
10
reach
be
here
11
put
on
wear
12
fall
asleep
be
asleep
13
catch
a
cold
have
a
cold
14
open
be
open
15
close
be
closed
16
become
be
17
end/finish
be
over
4a
Rewrite
the
sentences
using
for
or
since.
Jim
is
in
Japan.
He
arrived
there
three
days
ago.
2.
They
are
very
hungry.
Their
last
meal
was
ten
hours
ago.
They
haven’t
eaten
for
ten
hours/since
ten
hours
ago.
Jim
has
been
in
Japan
for
three
years.
Quiz
3.
I
have
a
camera.
I
bought
it
in
2009.
4.
I
know
Anna.
I
first
met
her
three
years
ago.
I
have
had
a
camera
since
2009.
I
have
known
Ann
for
three
years/since
three
years
ago.
Linda
has
been
ill
since
Monday.
5.
Linda
is
ill.
She
became
ill
on
Monday.
4b
Fill
in
the
blanks
with
the
correct
forms
of
the
verbs
in
brackets.
I
_______________
(never
be)
to
the
water
park
before.
I
want
to
_____
(go)
next
month
before
the
weather
gets
too
cold.
2.
They
_________________
(never
own)
any
pets,
but
they
__________________
(always
want)
to
have
a
dog.
have
never
been
go
have
never
owned
have
always
wanted
3.
We
_________
(have)
a
piano
since
last
November.
We
_______
(buy)
it
from
the
Li
family
when
they
moved
to
the
US
last
year.
4.
Cathy
and
Amy
____________
(not
be)
back
to
their
hometown
for
two
years.
They
______
(miss)
their
hometown
a
lot
and
hope
to
visit
the
place
next
year.
have
had
bought
haven’t
been
miss
5.
This
museum
_________
(be)
here
for
over
20
years.
It
_____
(be)
one
of
the
oldest
buildings
in
this
small
town.
has
been
is
Fill
in
the
questions
and
ask
two
students.Then
complete
the
chart.
1.Do
you
have
a(n)
________?How
long
have
you
had
it?
2.Do
you
own
a(n)
________?How
long
have
you
owned
it?
4c
1.Read
the
listening
materials
five
times.
2.Preview
the
passage
in
3a.
Homework
Thank
you!