解放军文职考试：在主语从句中, 下面的几种情况谓语动词通常用“should +动词原形”,should可省略。

　　① “It is+形容词+that ... ”句型。常见的形容词有important, necessary, natural, funny, strange, surprising, astonishing等。如:

　　—Is it necessary that heto the army?

　　—I agree, but the problem is that he is not tall enough.

　　A. will be sent B. be sent

　　C. must be sent D. can be sent

　　【分析】 B 在“It is necessary that ...”句型中,从句常常用虚拟语气,其形式为“should+动词原形”,should也可以省略。

　　在一些名词性从句中,谓语动词用“should+动词原形”或“should+have done”表示惊讶等感情色彩,译为“竟然,居然”。如:

　　I was surprised/shocked that the boy should shout at his head teacher. 这位男生竟然对班主任大声嚷嚷,我感到很吃惊。

　　It is strange that the poor old man should have been invited to his wedding. 那位贫穷老人竟然被邀请参加他的婚礼,真是奇怪。

　　② “It is +名词+that ...”句型。常见的名词有pity, shame, advice, suggestion, proposal(提议,建议),requirement, request, desire, order等。如:

　　It’s really a wonder that all the passengers on boardwhile the plane itself sank into the freezing Hudson River in New York.

　　A. must have been saved

　　B. should have been saved

　　C. would be saved

　　D. might be saved

　　【分析】 B should表示“竟然”,有惊讶的语气。句意:当飞机沉入冰冷的纽约哈德逊河,机上所有的乘客竟然全部获救,这真是一个奇迹。

　　③ “It is+动词的过去分词+ that ... ”句型。常见的动词有advise, order, propose, request, suggest, demand, require等。如:

　　It was ordered that no parkingallowed in front of the building.

　　A. is B. was

　　C. be D. would be

　　【分析】 C be前省略should。句意:命令楼前不允许停车。