含蓄條件句是指句中沒有明顯的虛擬條件句，而是利用其他手段來暗示存在虛擬條件。但是這類隱含式虛擬條件句往往都可以轉化為if引導的條件句。常來表示含蓄虛擬條件的手段有：
<( cM*kV (1)介詞或介詞短語，如but for, but that, without, in case of, under more favorable condition等。
S 3b|wUf 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.
_s2m-jm7 A. In spite of
o?;F.W_ B. But for
+SO2M|ru& C. Because of
c6f|
y_ 2 D. As for 答案選B。
mJSK; @w<O But that she was afraid, she would have said no.
mx:J>SPA8 (2)連詞，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。
~?2rG E She listened carefully in order that she might discover exactly what he wante
Y>xi|TWN D.=if she listened carefully ,she might discover exactly what he wante
I 93 ~8wQ D.
q-A`/9 If only I had more money, I could buy a car.
)> -77 \ (注：lest, for fear that 和 in case 引起的從句中謂語動詞多用should+動詞原形，但可以不用虛擬語氣，而用動詞的陳述語氣形式。)例如：
tn iPEmeS The foreign teacher spoke slowly in case we misunderstood him. 這位外籍教師說得很慢以免我們聽不懂。
pQk=x T Care must be taken in using this method lest overflow should occur.在使用此法時要小心謹慎，以免會發生溢流現象。
:D<: N*9i (3)通過上下文及內在含義，句中往往有but, otherwise, unfortunately等類似轉折詞。
YtV |e|aD I thought the children when we returned home, but they were still awake.
Pz5ebhgq A. were sleeping
k&MlQ2'!< B. would be sleeping
z\ xi ACIc C. had been sleeping
I{`KKui<M D. would sleep選擇 B。
Wv6z%r< (4)形容詞及其比較級
73'U#@g6
A more careful person would not have made so many mistakes.
" z^BKb5 A less conscientious man wouldn’t have tried so hard to get this job done.
&>&dhdTQ (5)分詞短語
3I'M6 WA Having known in time, we might have prevented the accident.
~a
|^?7@p Born ten days earlier, the boy could have seen his late father.
u5u0*c (6)動詞不定式短語。一般intended/meant/hoped/wished/planned 或 was/were+不定式完成式或had intended/meant/planned/hoped/wished/+不定式一般式表示虛擬。
A8_\2'b I intended I should call on you, but I was busy at that time.
zF[3%qZE:T To hear him speak French, you would take him for an Englishman.
p_rN1W
Dd' She would be stupid not to accept his invitation.
g i1}5DR It would be easier to do it this way.
O\|C,Ep m (7)名詞短語和名詞+and結構
d[s;a.
A judicious man would not have committed suicide.
5QqJ I#4~ A diligent student would have worked harder.
yRgDhA (8)獨立主格結構
G=
r(SJq All things considered, the price would be reasonable.
4
+da (9)定語從句
sf.E|]isW Anyone who had been in your position would have done the same.
LU-#=1Q A nation, which stopped working, would be dead in a fortnight.
lU&`r:1>_ (10)情態動詞完成式暗示虛擬語氣：
kr/1Dsr4 I should have called to make an airline reservation, but I didn’t.
;a!h.8UJPI The porter ought to have called the fire-brigade as soon as he saw the fire in the stock, which went up in smoke.
(5f5P84x (11)動詞原形表示虛擬
|x _ -I#H 動詞原形直接用在句子中也被看作是一種虛擬，最常見于正式文體中，動詞原形一般用在條件從句中，有時倒裝置于句首，同時這種用法也常見于獨立句中表達愿望。
*pcbwd!/ God bless you!
vWnHC All magnets behave the same, be they large or small.
P+*rWJ8gQ She’ll be sixteen years odd, com May.(come May =when May come).
f^[{k
{t If that be so, we shall take action at once
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