beforetheend

过去将来完成时

should

/

would

have

done

sth.

用法

1、

过去将来完成时表示在过去将来某一时间以前发生的动作，并往往会对过去将来某一时间产生影响。

We

hoped

that

she

would

have

got

the

plan

ready

before

we

came

back.

我们希望她能在我们回来

之前把计划做好。

He

said

he

would

let

me

have

the

book

as

soon

as

he

had

read

it.

他说书一看完就借给我。

2、

过去将来完成时还常用在虚拟语气中，表示与过去的事实相反。如:

If

I

had

seen

him

this

anteroom,

I

would

have

told

him

about

it.

今天下午我要是见到他，我会

告诉他那件事的。

过去将来完成进行时(The

past

future

perfect

continuous

tense).

过去将来完成进行时表示从过去某时看至未来某时以前会一直在进行的动作。

由“should/would+

have

been

+动词现在分词”构成。如:

He

told

me

that

by

the

end

of

the

year

he

would

have

been

living

there

for

thirty

years.