1 . 但是阿利斯泰尔为自己的决定给出了简单的解释：“如果我把乔尼落下，妈妈会不开心的。”
But for Alistair, his decision ________：“Mum________ if I’d left Jonny behind.”

2 . The show __________ longer so that we __________ more time together.

A．should have lasted; could spend	B．had better last; were able to spend
C．might be lasting; can spend	D．used to last; have been spending

3 . The horrific tragedy __________ if the architect __________ more careful with the way buildings were constructed.

A．ought to be avoided; was going to be	B．could have been avoided; had been
C．may have avoided; has been	D．will be avoided; will have been

4 . 我要是当时没有答应参加吉姆的聚会就好了，因为今晚我必须做一些额外的工作。（wish后的虚拟语气）
________________ Jim’s party, for I have to do some extra work tonight.

5 . 我上周要是采纳你的意见就好了。（I wish+宾语从句）
________________ last week.

6 . But for Alistair, his decision________________(很容易解释)：“Mum________________ (会不开心的) if I’d left Jonny behind.”（（2）主语＋be＋adj.＋to do;(2)虚拟语气）

7 . I went to the party.
I met my future wife.(用if将句子合并为虚拟语气)

8 . 如果Tom昨晚没有弄丢地图的话，他们就会早点儿回到家。
They would have got back home earlier if Tom ______________________ the map last night.

9 . 我当时太忙了，否则我就帮助她了。（汉译英）

10 . Thank you for your help, ________________ the work on time.
感谢你的帮助，没有你的帮助我们不可能按时完成工作。