2. If S + were/ Ved…, S would(…)+ 原V 如果我現在有時間，就會去逛街
If I ________ time, I ___________.
If S + had p.p., S would(…)+ have p.p.
如果我早知道 我就會告訴你
If I ________ that, I ___________ you.
would go shopping
had
would have told
had known

3. If S + were to 原V …, S would(…) +原V
If the sun __________ in the west, I _______ you.
If S + should 原V …, S would/will(…) +原V
If Mary _________you, I ____________ you my head.
were to rise
would marry
should marry
would give

4. If S + were adj/n , S would(…)+ 原V = Were S adj/n, S would(…)+ 原V
If I were rich, I would give you my money.
=_____________, I would give you my money.
Were I rich

5. If S + had p.p., S would(…)+ have p.p.
= Had S + p.p., S would(…)+ have p.p.
If I had known that, I would have told you.
=____________, I would have told you.
Had I known that

6. If S + should 原V …, S would/will(…) +原V
=Should S + 原V …, S would/will(…) +原V
If Mary should marry you, I would give you my head. = ___________________, I would give you my head.
Should Mary marry you

7. I wish=If only=Would that
as if / as though

8. It’s (about/ high) time + (that) S Ved S should V
It’s time (that) _________________her by force.
we carried and married
we should carry and marry

9. S + suggest that S (should) V/be p.p.
建議suggest, move, propose, recommend
要求ask, demand, require, request
堅持insist, urge, maintain
命令order, command

10. 與現在事實相反的另一種用法 But for +N = Without +N 要不是 用假設句 But for
Without +N, S would(…) + V
If it were not for
But that S + 現在式V
____________ your help, he wouldn’t marry Mary.
____________________, he wouldn’t marry Mary.
But for / Without
If it were not for
But that you help him

11. 與過去事實相反的另一種用法 But for +N = Without +N 要不是 用假設句 But for
Without N, S would(…) + V
If it had not been for
But that S + 過去式V
____________ your help, he wouldn’t have married Mary.
____________________, he wouldn’t have married Mary.
But for / Without
If it had not been for
But that you helped him

12. We will go for an outing if it ____(be) sunny tomorrow.
If he __(come) late, please give him the message.
If you __(not succeed), you should try again. Don’t lose courage.
If it rains tomorrow, we __(not go) swimming with you.
If I __(be) you, I would accept their invitation.
If I __(have) wings, I could fly all over the world.

13. If I had enough money, I __(take) a trip all over the world.
If you had asked him, he __(tell) the truth.
If the sun were to rise in the west, I __(change) my mind.
If it should rain tomorrow, the picnic __(be) called off.

14. How I wish I (A)can fly (B)will fly (C) could fly (D)am able to fly
He demanded that I __ the question at once. (A)would answer (B)answer (C)answered (D)had answered
Kate failed in the examination. She would have passed if she __ harder. (A)had studied (B)studied (C)would study (D)has studied
If she __ here tonight, tell her the news. (A)were (B)comes (C)should come (D)will have come

15. It’s eleven already. It’s time __ home
It’s eleven already. It’s time __ home. (A)we would (B)we’ll (C)we’re going (D)we went
I wish I __ play a musical instrument. (A)can (B)could (C)will (D)do
He stared at me as if I __ a foreigner. (A)were (B)am (C)had been (D)have been
I left very early last night, but I wish I __ so early. (A)didn’t leave (B)hadn’t left (C)haven’t left (D)couldn’t leave

16. How nice it would be if I __ take the examination
How nice it would be if I __ take the examination. (A)don’t have to (B)didn’t have to (C)won’t have to (D)had not
Cats can hear little noises as though they __ loud. (A)are (B)were (C)had been (D)had had

17. John wishes he __ English well when he was in high school
John wishes he __ English well when he was in high school. (A)learned (B)has learned (C)had learned (D)learns
The weather is cold today, but if it __, I would go swimming. (A)were (B)was (C)weren’t (D)did
If I had eaten breakfast several hours ago, I __ hungry now. (A)would not have been (B)would not be (C)would not have had (D)would not have

18. We’ve been working for three hours; it is a high time __
We’ve been working for three hours; it is a high time __. (A)we’d take a break (B)we took a break (C)we’ll take a break (D)we’ve taken a break
A: That’s a beautiful dress in the window. B: It certainly__. If I __ the money, I would buy it. (A)is;had (B)is; have (C)were; had (D)was; had
If I __ a little slower, the accident wouldn’t have happened. (A)have driven (B)drove (C)has driven (D)had driven

19. The boy looked pale as though he __ a ghost last night
The boy looked pale as though he __ a ghost last night. (A)seen (B)had seen (C)would see (D)saw
__ your help, I would have failed in the examination. (A)If only (B)But that (C)But for (D)With
Without computer control, a modern plant __ smoothly. (A)couldn’t run (B)would run (C)didn’t run (D)should be run

20. It is urgent that modern medicine __ the spread of AIDS
It is urgent that modern medicine __ the spread of AIDS. (A)stops (B)stop (C)would stop (D)stopped
If the earth stopped moving, what do you think __? (A)would happen (B)will happen (C)were happened (D)happened
Tom Lee __ three years ago. If he were alive now, he would be in the seventh grade. (A)died (B)had died (C)had been dead (D)were dead
If it __ for your help, I’d never finish the hard work. (A)was (B)was not (C)were (D)were not

21. If I were a millionaire, __
If I were a millionaire, __. (A)I will travel around the world (B)I can buy many houses (C)I would help the poor (D)I would have bought you a diamond
Stephen moved to Taiwan and studied Taiwanese a year ago. But now he speaks Taiwanese as if he __ a native. (A)were (B)is (C)has (D)would be
If I __(have) enough money now, I would buy this digital camera.
If John __(write) with more care, he can avoid many spelling errors.

22. If you had been in my shoes, you __(may not say) so.
If it had rained yesterday, the road __(be) muddy now.
When they went out, the teacher demanded that I __(tell) him everything.