it is wonderful等结构后的主语从句： It is a great pity that he should be so conceited. 遗憾他竟会这样自高自大。 It's strange that she should have failed to see her own shortcomings.真奇怪，他竞然没看出自己的 缺点。 It seems incredible that he should have finished the work so soon.真是人难以相信，他工作竟完成得这 么快。 It is quite natural that such fears should arise. 这样的疑虑是很自然的。 B)同位语从句及表语从句谓语动词的虚拟： suggestion,motion,proposal,order, recommendation,plan,idea等后面的表语7 it is wonderful 等结构后的主语从句：  It is a great pity that he should be so conceited. 真 遗憾他竟会这样自高自大。  It’s strange that she should have failed to see her own shortcomings. 真奇怪，他竟然没看出自己的 缺点。  It seems incredible that he should have finished the work so soon. 真是人难以相信，他工作竟完成得这 么快。  It is quite natural that such fears should arise. 产生 这样的疑虑是很自然的。  B) 同位语从句及表语从句谓语动词的虚拟： suggestion, motion, proposal, order, recommendation, plan, idea等后面的表语