含蓄条件句是指句中没有明显的虚拟条件句，而是利用其他手段来暗示存在虚拟条件。但是这类隐含式虚拟条件句往往都可以转化为if引导的条件句。常来表示含蓄虚拟条件的手段有：
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（1）介词或介词短语，如but for, but that, without, in case of, under more favorable condition等。 Kzgn h gc
the leadership of the party, we could not be living a happy today.=If there hadn't been the leadership of the party, we could not be living a happy today. Vt D:'L-
A. In spite of B. But for C. Because of D. As for 答案选B。 4E DwZR>./
But that she was afraid, she would have said no. SV96eYT<
（2）连词，如：so that, unless, in case, supposing, lest, provided（倘若……），for fear that（唯恐），in order that, on condition that, if only（要是……就好了）等。 lGtTZ
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She listened carefully in order that she might discover exactly what he wanted.=if she listened carefully ,she might discover exactly what he wanted. %t\ ~3pw=
If only I had more money, I could buy a car. :IlJQ{=W
（注：lest, for fear that 和 in case 引起的从句中谓语动词多用should+动词原形，但可以不用虚拟语气，而用动词的陈述语气形式。）例如： z wJ Vi9sO
The foreign teacher spoke slowly in case we misunderstood him. 这位外籍教师说得很慢以免我们听不懂。 9n[ovX 7n!
Care must be taken in using this method lest overflow should occur.在使用此法时要小心谨慎，以免会发生溢流现象。 Bys _8x}
（3）通过上下文及内在含义，句中往往有but, otherwise, unfortunately等类似转折词。 Zm!5X9^!
I thought the children when we returned home, but they were still awake. OwM.N+ z#T
A. were sleeping B. would be sleeping C. had been sleeping D. would sleep选择 B。 ^w|apI~HSE
（4）形容词及其比较级 }hv" ku6!
A more careful person would not have made so many mistakes. X m!
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A less conscientious man wouldn't have tried so hard to get this job done. i+H HOT
（5）分词短语 R59'KR2?
Having known in time, we might have prevented the accident. +Tw ]u`
Born ten days earlier, the boy could have seen his late father. To "J>:l
（6）动词不定式短语。一般intended/meant/hoped/wished/planned 或 was/were+不定式完成式或had intended/meant/planned/hoped/wished/+不定式一般式表示虚拟。 =fr_` "?k
I intended I should call on you, but I was busy at that time. 7xmif YC
To hear him speak French, you would take him for an Englishman. >C|i^4ppI
She would be stupid not to accept his invitation. u:0 M,Ye
It would be easier to do it this way. .j)f'<;%
（7）名词短语和名词+and结构 otgU6S7F
A judicious man would not have committed suicide. ?yq1\G)]
A diligent student would have worked harder. :"oQ _bLT
（8）独立主格结构 h#>%\Pvt;
All things considered, the price would be reasonable. 41[1_ p(
（9）定语从句 V@"Y"}4n4
Anyone who had been in your position would have done the same. ?$#,h30
A nation, which stopped working, would be dead in a fortnight. +$F_7Hx
（10）情态动词完成式暗示虚拟语气： 1/H9(2{L
I should have called to make an airline reservation, but I didn't. d;$<K
The porter ought to have called the fire-brigade as soon as he saw the fire in the stock, which went up in smoke. #&cN R_"w
（11）动词原形表示虚拟 c= }#8d.
动词原形直接用在句子中也被看作是一种虚拟，最常见于正式文体中，动词原形一般用在条件从句中，有时倒装置于句首，同时这种用法也常见于独立句中表达愿望。 u`] J]g E
God bless you! &7 YTz3aj
All magnets behave the same, be they large or small. 8JU9Qb]L'I
She'll be sixteen years odd, com May.（come May =when May come）。 0"V L6$
If that be so, we shall take action at once. 1 %nE
