Unit 12 Life is full of the unexpected. 过去完成时课件（共16张PPT）

(共16张PPT)
Unit
12
Life
is
full
of
the
unexpected.
Past
Perfect
Tense




































































































had
gotten
in
the
bathroom
got
up
future
past
perfect
By
the
time
she
got
up,
her
brother
had
already
gotten
in
the
bathroom.
过去完成时
过去时
past
now
past
perfect
past
Before
she
the
station
the
bus
.
got
to
had
already
left
now
past
perfect
past
When
she
school
she
realized
she
her
backpack
at
home.
got
to
had
left
now
6:00
7:00
现在
By
the
time
I
got
up,
my
sister
had
already
washed
all
the
clothes.
By
the
time
_______________,
the
bell
_________.
she
got
to
school
present
The
bell
rang.
8:00
A.M
had
rung
She
got
to
school.
8:15
A.M
过去完成时
(1)用法：描述在过去某一时间或动作之前已经发生或完成了的动作,
即“过去的过去”。
(2)构成：
肯定式：主语
+
had+
done+其他？
否定式：主语
+
had
not
+
done+其他？
疑问式：Had
+
主语
+
done+其他
?
回答：Yes,
主语
had.
/
No,
主语
hadn’t.
缩写式：I’d/
He’d/
We’d/
They’d
(3)
标志词：
表示过去某一时间发生的动作用by
the
time
,
by
the
end
of,
before,
when
引导
的时间状语从句；
表示过去的过去发生的动作常与already,
since+点时间，for
+
段时间连用。
(4)
口诀：
有两个动作发生在过去，一个先发生，
一个后发生，先发生的用过去完成时，后发生的用一般过去时。
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