We propose that somebody neutral take the chair(担任主席)。
She insisted that she go to the south for her holiday.
Congress has decided /voted/ decreed that the present law be maintained.
The doctor insisted that he not eat meat.
b)用在decision, decree, demand, Instruction, order, requirement, resolution等名词之后的that-分句中。例如：
The board(理事会) has given instructions that the agent fly to Boston.
We were faced with the demand that this tax be abolished.
Your advice that she wait till next week is reasonable.
Their decision was that the school remain closed.
His order that the troops not be sent at once was carried out.
在这一用法中be-型虚拟式能与“should +不定式”交替使用，也能与不定式被动语态交替使用。例如：
He ordered that the books be sent at once.
=He ordered that books should be sent at once.
=He ordered the books to be sent at once.
It is important that she be placed in an appropriate job.
=It is important that she should be placed in an appropriate job.
=It is important for her to be placed in an appropriate job.
be-型虚拟式能用于由if, though, whatever, lest, so long as等引导的分句中表示推测、让步、防备等含义。例如：
If he be found guilty, John shall have the tight of appeal.
If the rumour be true, everything is possible.
Though everyone desert you, I will not
Whatever be his defense, we cannot tolerate this disloyalty.
So long as a volume hold together, I am not disturbed as to its outer appearance.
Whether she be right or wrong, she will have my unswerving support.
Quietly we sat on the river bank lest the fish swim away.
上述用法现在只限于正式书面语体，在非正式语体中通常用动词陈述式或者用should/may+不定式。例如：
If the rumour is true, everything is possible.
He hid himself in the bush lest he should be seen.
Whatever his defense may be, we can't tolerate this disloyalty.
用于某些公式化的语句中
be-型虚拟式用于某些公式化语句中可表示祝愿、诅咒、禁止等意义。例如：
Long live the People's Republic of China!
God bless you!
God damn you!(该死的)
Heaven forbid!（天理不容)
Devil take him!(混蛋)
So be it.(但愿如此/就这样吧。)
Suffice it to say that...(只需说……就够了。)
Far be it from me to(我极不愿) spoil the fun.
He will remain here if need be.
Home is home,be it ever so homely.
虚拟式/were-型虚拟式
were-型虚拟式只有一种形式，即不管主语是什么人称，动词一律用were,如 I were, you were, he were；如果动词为进行体或被动态，其助动词也一律用were,如 I were going, you were going,he were going；又如 I were sent, you were sent,he were sent,因此，were-型虚拟式 《高二unit 15 A Famous Detectative(第3页)》出自：www.89xue.com网
www.89xue.com 只有出现在单数第三人称主语之后，它才在形式上与陈述式was区别开来。were-型虚拟式的主要用法如下。
1.用于某些状语分句中
were-型虚拟式常用由if,if only ,as if,as though,though引导的条件状语和让步状语分句中，表示非真实的条件或让步。例如：
If I were you,I should wait till next week.
If it were to rain,the game would be put off.
If only I were not so nervous.(要是不那么紧张就好了。)
He spoke to me as if I were deaf.
He behaves as though he were better that us.
Though the whole world were against me,I would do what I consider as right.
2.用于某些名词性分句中
were-型虚拟式常用于出现在wish,would rather,suppose,imagine之后的that-分句中，表示一种臆想的(通常是不可能发生的)情况。例如：
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