虚拟语气除了在上述非真实条件从句中应用以外，在特定的名词从句中也会用到。这里所说的“特定的名词从句”是指这样的名词从句中均要含有特定的标志词，这些标志词可以用来表示愿望、建议、命令、请求和意志等语气。而且，与非真实条件虚拟语气句中主句和从句谓语动词形式完全不同的是，名词从句虚拟语气句谓语变化形式只有一条规律，那就是名词从句虚拟语气句无论主句的谓语动词是何种形式，从句谓语形式均为should + 动词原形，should可以省去。这里特别提醒读者注意的是不是用would, 而是用should。
先看下例：
I suggest that we should go tomorrow. 我建议我们明天走。
I suggested that we should go the next day. 我当时建议我们第二天走。
上例中的suggest 即是我们所说的标志词，这里我们看到从句中的谓语时态（should go）并没有受主句谓语时态（suggest, suggested）的影响。
由此可知，要掌握名词从句的虚拟语气句，记住相应的标志词即可，一旦主句中出现某一个标志词，我们就注意其从句谓语必须用（should +） do的形式。
下面为大家列出一些常见的标志词：
（1）在下列词的宾语从句中，从句谓语必须用(should +) do的形式
ask（要求，请求）　advise　beg　command
demand　decide　deserve　desire
determine　move（动议，提议）　order　prefer
propose　require　recommend　request
suggest　urge　insist
a.His father urged that he study medicine.（不用studies）
b.The Chinese Government and people have demanded that the U.S. Government shoulder all the responsibilities for the incident, apologize to the Chinese side and take effective measures to prevent the recurrence of such incidents.
中国政府和人民要求美国政府对此事件必须承担全部责任，向中国道歉并采取有效措施防止类似事件再次发生。
c.The instructions ask that we_________more than three tablets once.
A. not to take
B. not take
C. won't take
D. wouldn't take
正确答案：B。
（2） It is +形容词 / 过去分词 / 特定的名词+ that...主语从句中用(should +) do。
1）接这种结构的常见形容词有：
astonishing　amazing　advisable　appropriate　crucial
desirable　essential　important　imperative　keen
necessary　natural　normal　odd　proper
preferable　strange　sorry　shocked　surprising
urgent　unusual　vital
这些形容词一般表示个人对事件的反应或态度。
a.It is natural that I should dwell upon his successes rather than upon his failures.
我宁愿强调他成功的地方，而不愿突出他的失败之处，这是自然的。
b.It is strange that he should not come here.（这里should只表明一种意外的语气，可译为“竟然" ）
c.It's essential that people be psychologically able to resist the impact brought about by the transition from planned economy to market economy.
d.It is important that the hotel receptionist_________that guests are registered correctly.
A. make sure
B. made sure
C. has made sure
D. must make sure
正确答案：A。
e.It is quite natural that the customs of all national minorities _____.
A. would be respected
B. were respected
C. be respected
D. had been respected
正确答案：C。
2）接这种结构常见的过去分词有：
decided　desired　demanded　ordered
requested　required　suggested　recommended
a.It is requested that all members be present at the meeting.
b.It is politely requested by the hotel management that radios ______after 11 o’clock at night.
A. were not played
B. not be played
C. not to play
D. did not play
正确答案：B。
3）接这种结构的常见特定名词有：
advice　decision　desire　demand
suggestion　motion　pray　resolution
idea　proposal　order
wish preference　recommendation　requirement　
It is my proposal that he be sent to study further abroad.
（3）在上述名词的表语从句和同位语从句中
a.For my own part, it seems that the main requirement of an intern-ational language is that it be easily learned.
b.The motion that the meeting be adjourned was adopted.
c.Reports indicate that both sides have softened their respective positions for a possible settlement. The government has backed away from demands that the software giant be broken up , while Microsoft is now more willing to accept restrictions on how it manages its business.
d.The suggestion that the mayor_________the prizes was accepted by everyone.
A. would present
B. present
C. presents
D. ought to present
正确答案：B。
最后需要说明的是，以上所列的标志词仅是一部分常见的，还有很多在此未尽详列，大家可以在今后的学习当中不断积累，自己总结。