动词之虚拟语气

虚拟语气定义：

虚拟语气，是指当if条件从句的内容不可能实现的时候，要对if条件句和主句的动词形式进行适当变化。SAT主要考三种：主要是

if as

ifas

though1.If从句表达的意思和现在情况相反或目前不可能实现If+were/did,S+would/could/should+v.如：If

I

had

time,

I

would

go

now.If

I

were

a

bird,

I

would

fly.注意：would

可换成：might

could

should2.If从句表达的意思与过去事实相反If+had

done

, S+would

have

done从现在的角度对已经发生的事情发出感叹、表达后悔。如果当初怎么样，那么现在就怎么样了。如：If

you

had

come

here

earlier,

we

would

havefinished

the

work

now.没有早来，没有完成。3.If从句表达的意思与将来事实很可能相反或将来实现的可能性很小If

+were

to

do/did/should

,

S

+would

do如：If

I

should

win

a

lottery

of

10

million

dollars, I

would

buy

you

a

big

house.If

I

should

have

time

tomorrow, I

would

go

with

you.虚拟倒装句在if条件句中含有should，had，were时，常常会把if省去，并将should，had，were放在句首（其余部分顺序不变）。如：If

I

were

you,I

would

go.等同于

Were

I

you,I

would

go.虚拟语气题型举例The

bus

would

not

have

had

to

take(A)

the

longdetour

instead

of

（B）the

main

highway

if

thebridge

did

not e

(C)treacherous

in

the

aftermathof

(D)an

ice

storm.

No

error(E)

08年01月

虚拟语气题型举例Had

(A)

I

known

that

we

would

be

(B)

walking

thefifteen

(C)

blocks

from

the

movie

theater

to

therestaurant,

I

would

of

(D)

worn

more

comfortableshoes.

No

error

(E)

08年01月

虚拟语气题型举例Were

they

to

be

told

the

purpose

of

the

study,

theparticipants

might

find

it

difficult

to

answer

thequestions

spontaneously.(A)

Were

they

to

be

told(B)

If

they

would

have

been

told(C)

With

it

being

told

them(D)

Telling

them(E)

By

telling

them

12年05月

虚拟语气题型举例If

there

had

been

a

power

failure,

the

hospital

willrun

on

electricity

from

its

own

generators,

whichcan

operate

for

200

hours(A)

If

there

had

been(B)

If

there

were(C)

Had

there

been(D)

Should

there

be(E)

There

has

been

08年10月

require,

request,

suggest,

command+that

…(should)…I

request

that

Jill

(should)

pick

up

the

ball.She

requested

that

the

door

to

her

room(should)

be

left

open.虚拟语气题型举例Our

tour

guide

requested

that,

while

hikingthrough

the

national

park,

our

garbage

not

be

thrown

on

the

trails.(A)

our

garbage

not

be

thrown(B)

our

garbage

should

not

be

thrown(C)

not

to

throw

our

garbage(D)

we

did

not

throw

our

garbage(E)

we

not

throw

our