if条件句讲解及其练习进步

-*

if

条件句讲解及练习

从句

主句

与现

过去式

would/should /could/might+

在事

（

be

用

do

实相

were

）

反

与过

过去 完成

would/should/could/might

去事

式

+ have done

实相

反

与将

should

would/should/could/might

来事

(were to)

+ do

实相

+

动词原

反

形

If I were you, I

would not let out the

secret.

如果我是你的话，我不会泄露这个

秘 密的。

If I knew his new address, I would

tell you.

-*

如果我知道他的新地址，我会告诉

你 的。

If he studied harder, he would pass

the exam.

过考试的。

If we had made fuller preparation,

we should have won the game.

如果我们做了更充分的准备的话，

我们肯定就赢了这场比赛。

If

you

had

taken

my

advice,

you

wouldn’t have

been late for the meeting.

如果 你听了我的建议，你开会就不

会迟到了。

If she were to/should come, I would

tell her the secret.

万一她来的话，我会告诉她这个秘

密。

（

2

）省略

if

的虚 拟条件句

在含有

were,

had,

或者

should

等

词的虚拟条件句中，

可以省略

if,

将

were,

-*

had

或者

should

这些 助动词放在句首。

如：

Were I you, I would not let out the

secret.

Had

we

made

fuller

preparation,

we should have won the game.

Had

you

taken

my

advice,

you

wouldn’t have been late for the meeting.

Should

she

come,

I

would

tell

her

the secret.

高一语法练习（四）预测、

if

条件句 及

虚拟语气

一、单项选择

1. If I _____ where he lived, I _____

a note to him.

A. know, would have sent

B. had known, would have sent

C. know, would send

D. knew, would have sent

2.

Mary

is

ill

today.

If

she

_____,

-*

she _____ absent from school.

A.

were

not

il

l;

wouldn’t

be

B. had been ill; wouldn’t have been

C.

had

been

ill;

should

have

been

D. hadn’t been ill; could be

3.

He

acted

as

if

he

_____

everything in the world.

A. knew

B. knows

C. has known

D. won't know

4.

If

you

had

enough

money,

what

_____?

A. will you buy

B. would you buy

C. would you have bought

D. will you have bought

5. If Mr. Young _____ with justice,

he _____ such a wrong thing.

A. were treated; wouldn’t do

B. had been treated; wouldn’t

have

-*

done

C.

were

treated;

wouldn’t

have

done

D. had been treated; wouldn’t do

6.

What

_____

if

there

_____

no

light during the day?

A. will happen; was

B. would happen; is

C. happens; were

D. would happen; were

7. The spokesman acted that way as

if he _____ anything about the accident

but actually he did.

A. doesn’t hear

B. didn’t hear

C. haven’t heard

D. hadn’t heard

8.

If

it

_____

not

for

the

fact

that

you _____ ill now, I would surely punish

-*

you.

A.

is;

are

B.

were;

were

C. were; are

D. was; were

9.

Many

Chinese

movie

stars

now

have given up their Chinese nationality.

If I were them, I _____ that.

A. shouldn’t do

B. didn’t do

C. hadn’t done

D. won’t do

10. I want to get back by 5 o’c

lock

if _____.

A. likely

B. can

C. possible

D. probable

11.

It

seems

as

if

it

_____

already

summer now but it is only February.

A. is

B. was

C. were

D. had been