be型虚拟语气及倒装

be-型虚拟式的主要用法如下。

用于表示命令、决定、建议等词语之后的that-分句中

be-型虚拟式的这一用法又有以下三种情况：

a)用在decide, decree, demand, insist,moveorder,prefer,propose,recommend,request,require,suggest,vote 等动词之后的that分句中。例如：

He ordered that all the books be sent at once.

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，在非正式语体常用动词述式或者用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!

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.

语法----倒装

英语句子的语序通常是主语在前，谓语在后，这种语序称作正常语序或自然语序。但有时出于语法或达到某种修辞目的(强调、承上启下、平衡等)的需要，要把谓语动词放在主语前面，这种语序称作倒装(Inversion)语序。将谓语动词完全移至主语之前，称完全倒装(Full Inversion)；如果只是把助动词或情态动词放在主语之前，称为部分倒装。

1. there be结构的倒装

在“there be”(或there + appear to be，come，exist, happen to be, lie, live, occur, remain, seem, seem to be, stand, used to be) 雪结构中，倒装形式为完全倒装。如：

There were many students in the reading room in this evening.

今晚阅览室里有许多学生。

There is a TV set, a stereo system and a number of chairs in the sitting room.

客厅里有一台电视机，一套组合音响和一些椅子。

2. here，there，now，then等引起的倒装

在以here,there,now,then等简短副词引起的句子中(前三个须用一般现在时)，动词往往是be,come,go等时，这类句子大多带有引起注意的含义。如：

Here comes the bus.

公共汽车来了。

Here is the letter you have been looking forward to.

你久盼的信在这儿。

但要注意：如果主语是人称代词，则不用倒装。如：

Here they are. 他们在这儿。

3. 省略if的非真实条件状语从句中的倒装

虚拟结构中的条件从句省去if时，were, had, should须移至主语之前。如：

Had you worked harder at college, you would have got better job.

如果你在大学期间读书用功些，现在就会找到一份更好的工作。

Were he better qualified, he would apply for the position.

要是他的条件再好些，他就申请这个职位。

4. 副词so， neither， nor等引起的倒装

在用so, nor, neither表示“也/不……”这一类结构里其公式是:

肯定: so+be/have/助动词/情态动词＋主语

否定: Neither(nor)+be/have/助动词/情态动词＋主语。如：

—He has been to Beijing.他去过。

—So have I.我也去过。

—They can’t answer the question.他们不会回答这个问题。

—Neither than I.我也不会。

5. what，how引起的倒装

以What, how开头的感叹句(表语或宾语提前)。如：

What beautiful weather (it is)!

多好的天气啊！(表语提前)

What a lovely picture he painted!

他画了一多好的画啊！(宾语提前)

6. 疑问词或连接词引起的倒装