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。 }WS%nQA
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. #q Wa[kB
A. In spite of B. But for C. Because of D. As for 答案选B。 ]Cnj=\'
But that she was afraid, she would have said no. 28JWQ%-
（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。 V9z/yN o
She listened carefully in order that she might discover exactly what he wanted.=if she listened carefully ,she might discover exactly what he wanted. 8.HqQ:?&2t
If only I had more money, I could buy a car. G 5w:
（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： "]>JtK
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。 B;9X{"
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。 *2N$l>ql:k
（3）通过上下文及内在含义，句中往往有but, otherwise, unfortunately等类似转折词。 " NnUu 8x
I thought the children when we returned home, but they were still awake. mG@xehH
A. were sleeping B. would be sleeping C. had been sleeping D. would sleep选择 B。 \_
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（4）形容词及其比较级 ba& \~_4
A more careful person would not have made so many mistakes. fQRGz\r*k
A less conscientious man wouldn't have tried so hard to get this job done. gfG Mu0FjB
（5）分词短语 Ql&5fyW
Having known in time, we might have prevented the accident. Qy
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Born ten days earlier, the boy could have seen his late father. Ic/D!J{Y
（6）动词不定式短语。一般intended/meant/hoped/wished/planned 或 was/were+不定式完成式或had intended/meant/planned/hoped/wished/+不定式一般式表示虚拟。 &l2oyQEF)
I intended I should call on you, but I was busy at that time. U">w3o|
To hear him speak French, you would take him for an Englishman. E9TWLB5A)(
She would be stupid not to accept his invitation. *t. L` G
It would be easier to do it this way. 0*S]m5#;
（7）名词短语和名词+and结构 pE
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A judicious man would not have committed suicide. Ae R3wua
A diligent student would have worked harder. Wcd;B7OH
（8）独立主格结构 u^T)4~(
All things considered, the price would be reasonable. bzD <6Z
（9）定语从句 |n3fAN
Anyone who had been in your position would have done the same. 9gR@Q%b)
A nation, which stopped working, would be dead in a fortnight. B|U*2|e
（10）情态动词完成式暗示虚拟语气： E uxD, (
I should have called to make an airline reservation, but I didn't. xD+n2:I{
The porter ought to have called the fire-brigade as soon as he saw the fire in the stock, which went up in smoke. |2w,Np-
（11）动词原形表示虚拟 :E'uV" j%
动词原形直接用在句子中也被看作是一种虚拟，最常见于正式文体中，动词原形一般用在条件从句中，有时倒装置于句首，同时这种用法也常见于独立句中表达愿望。 9nF;$ HB
God bless you! A+v6N>}*
All magnets behave the same, be they large or small. :MPWf4K2s
She'll be sixteen years odd, com May.（come May =when May come）。 E wDFU K
If that be so, we shall take action at once. k+
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