2012年成人英语三级考试之辅导讲义(一)
if引导条件状语从句时，可以将were/had/should提至句首，省略if考试时经常是将省略if的与含有if的选项并列，在这种情况下，应注意分清从句的时态，尽管多数情况下都是倒装的结构为正确选项。如（3）、（4）、（6）和（7）。
再如：
Were they here now，they could help us.=If they were here now，they could help us.
Had you come earlier，you would have met him.=If you had come earlier，you would have met him.
More Exercises
（1）If I hadn“t stood under the ladder to catch you when you fell，you ____ now.
A.wouldn”t be smiling
B.couldn“t have smiled
C.won”t smile
D.didn“t smile
答案：A
（2）____ for my illness I would have lent him a helping hand.
A.Not being
B.Had it not been
C.Without being
D.Not having been
答案：B
（3）______before we depart the day after tomorrow，we should have a wonderful dinner party.
A.Had they arrived
B.Would they arrive
C.Were they arriving
D.Were they to arrive
答案：D
（4）Jean doesn”t want to work right away because she thinks that if she ____ a job she probably wouldn“t be able to see her friends very often.
A.has to get
B.were to get
C.had got
D.could have got
答案：C
（5）_____ right now，she would get there on Sunday.
A.Would she leave
B.If she leaves
C.Were she to leave
D.If she had left
答案：C
（6）Had he worked harder，he ____ the exams.
A.must have got through
B.would have got through
C.would get through
D.could get through
答案：B
（7）If the whole operation _____ beforehand，a great deal of time and money would have been lost.
A.was not planned
B.has not been planned
C.had not been planned
D.were not planned