三、混合虛擬語氣　
有時(shí)主句和從句的謂語動(dòng)詞指不同的時(shí)間，這時(shí)需要用混合虛擬語氣。一般來說，在這種情況下，主從句謂語動(dòng)詞指代的時(shí)間不同，所以我們又可以錯(cuò)綜時(shí)間條件句，在這種虛擬情況，動(dòng)詞形式應(yīng)根據(jù)實(shí)際情況靈活使用，在做這些題目時(shí)候尤其要注意每道題目的提示語：時(shí)間狀語。絕大多數(shù)情況下，從句或者主句都有相關(guān)的時(shí)間狀語，這是我解題的關(guān)鍵?！?
If?you　that?late?movie?last?night,?you?wouldn’t?be?so?sleepy.　
A.?haven’t?watched　
B.?didn’t?watch　
C.?hadn’t?watched　
D.?wouldn’t?have?watched　答案選C?！?
Many?dead?would?now?be?alive?if?they?have?not?attempted?to?return?for?something.　
Had?Paul?received?six?more?votes?in?the?last?election,?he?would?be?our?chairman?now.　
混合虛擬語氣還有一種情況就是事實(shí)和虛擬假設(shè)的混合句，這樣的句子不僅僅是時(shí)間的不同，而重要是事實(shí)和假設(shè)的混合?！?
I?would?have?gone?to?visit?him?in?the?hospital?had?it?been?at?all?possible,?but?I?was?fully?occupied?the?whole?of?last?week.　
該句前半部分是假設(shè)虛擬，而后半部分是事實(shí)的陳述?！?
Your?math?instructor?would?have?been?happy?to?give?you?a?make-up?examination?had?you?gone?and?explained?that?your?parents?were?ill?at?the?time.　
該句前半句用的是假設(shè)虛擬，后半句主句也用的是假設(shè)虛擬（如果你去并且解釋的話），但是后半句的從句用的是事實(shí)語氣，因?yàn)椤案改覆×恕笔强陀^事實(shí)，故不需要用虛擬形式had?been。　
四、含蓄虛擬條件句　
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(zhuǎn)化為if引導(dǎo)的條件句。常來表示含蓄虛擬條件的手段有：　
（1）介詞或介詞短語，如but?for,?but?that,?without,?in?case?of,?under?more?favorable?condition等?！?
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.?
A.?In?spite?of　
B.?But?for　
C.?Because?of　
D.?As?for　答案選B?！?
But?that?she?was?afraid,?she?would?have?said?no.　
(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?！?
She?listened?carefully?in?order?that?she?might?discover?exactly?what?he?wante
D.=if?she?listened?carefully?,she?might?discover?exactly?what?he?wante
D.　
If?only?I?had?more?money,?I?could?buy?a?car.　
(注：lest,?for?fear?that?和?in?case?引起的從句中謂語動(dòng)詞多用should+動(dòng)詞原形，但可以不用虛擬語氣，而用動(dòng)詞的陳述語氣形式。)例如：　
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?！?
Care?must?be?taken?in?using?this?method?lest?overflow?should?occur.在使用此法時(shí)要小心謹(jǐn)慎，以免會發(fā)生溢流現(xiàn)象?！?
（3）通過上下文及內(nèi)在含義，句中往往有but,?otherwise,?unfortunately等類似轉(zhuǎn)折詞?！?
I?thought?the?children　when?we?returned?home,?but?they?were?still?awake.　
A.?were?sleeping　
B.?would?be?sleeping　
C.?had?been?sleeping　
D.?would?sleep選擇?B?！?
(4)形容詞及其比較級　
A?more?careful?person?would?not?have?made?so?many?mistakes.　
A?less?conscientious?man?wouldn’t?have?tried?so?hard?to?get?this?job?done.　
(5)分詞短語　
Having?known?in?time,?we?might?have?prevented?the?accident.　
Born?ten?days?earlier,?the?boy?could?have?seen?his?late?father.　
(6)動(dòng)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。　
I?intended?I?should?call?on?you,?but?I?was?busy?at?that?time.　
To?hear?him?speak?French,?you?would?take?him?for?an?Englishman.　
She?would?be?stupid?not?to?accept?his?invitation.　
It?would?be?easier?to?do?it?this?way.　
(7)名詞短語和名詞+and結(jié)構(gòu)　
A?judicious?man?would?not?have?committed?suicide.　
A?diligent?student?would?have?worked?harder.　
(8)獨(dú)立主格結(jié)構(gòu)　
All?things?considered,?the?price?would?be?reasonable.　
(9)定語從句　
Anyone?who?had?been?in?your?position?would?have?done?the?same.　
A?nation,?which?stopped?working,?would?be?dead?in?a?fortnight.　
(10)情態(tài)動(dòng)詞完成式暗示虛擬語氣：　
I?should?have?called?to?make?an?airline?reservation,?but?I?didn’t.　
The?porter?ought?to?have?called?the?fire-brigade?as?soon?as?he?saw?the?fire?in?the?stock,?which?went?up?in?smoke.
(11)動(dòng)詞原形表示虛擬　
動(dòng)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(dòng)詞原形一般用在條件從句中，有時(shí)倒裝置于句首，同時(shí)這種用法也常見于獨(dú)立句中表達(dá)愿望?！?
God?bless?you!　
All?magnets?behave?the?same,?be?they?large?or?small.　
She’ll?be?sixteen?years?odd,?com?May.(come?May?=when?May?come).　
If?that?be?so,?we?shall?take?action?at?once