所谓的情态动词在主句的谓语动词中的运用没理解您具体想知道什么,
因为这个问题相当宽泛。。。看看下面的说法有用没
表示对将来情况的主观推测(可能相反或可能性很小)
主语+should/would/could/might+do+其他
if+主语+did/should/were to do+其他
例:
1.If he should come here tomorrow, I should/would talk to him.
如果他哪天来这儿的话,我就跟他谈谈。 (事实:来的可能性很小) 2.If there were a heavy snow next Sunday, we would not go skating. 如果下周日下大雪,我们就不能去滑冰了。(事实:不知能否下雪)
3.If she were to be there next Monday, I would tell her about the matter.
如果她下周一来这儿的话,我就会告诉她这件事的始末。
在表示建议、命令、要求等含义的宾语从句,谓语动词常用虚拟语气,"should+动词原形"构成,should 可省略。
虚拟语气用在:一想要(desire)二宁愿(prefer)三命令(order. command)四建议(advise. suggest. propose)五要求(demand. require. request. desire.insist)中,
无论主句谓语动词为何种时态,从句的谓语动词都用:
“should + 动词原形”或只用“动词原形”。
如 He suggested that we (should) take the teacher’s advice
He insisted that we (should) take the teacher’s advice
He demand that we (should) take the teacher’s advice
He ordered that we (should) take the teacher’s advice
注:insist如果翻译成坚持某种动作才用虚拟语气翻译成坚持某种观点就不用虚拟语气。
如:He insist he is a student. 他坚持说他是个学生。
这个语句表示的是事实,因此在这个语句中不能使用虚拟语气。
suggest意为“建议”才用虚拟语气,意为“暗示”则不用虚拟语气。 如: His face suggests that he looks worried .他的表情暗含着他很担心。
这个句子本身是事实,因此它就没有用到虚拟语气。
③表情绪.观点的形容词或名词也要用虚拟语气.
如:necessary. important. impossible. natural. strange. surprising. funny. right. wrong. better. a pity等。
句型:It is.......that 结构后的主语从句,从句的谓语动词都要用 should+原型 或只用动词原型。
④虚拟语气在方式状语从句的应用。详百度百科之方式状语从句词条。
若依然没有您需要的,请参见参考资料!希望有帮助!
参考资料:http://baike.baidu.com/view/26751.htm?fr=ala0_1#3_2