一般说来,在一些特定的词语引导的从句中都要用带should的虚拟语气.在美国英语里,should是可省掉的.具体的省略情况如何呢?现归纳如下：

1．凡是由suggest,request,order,demand,propose,desire,command,insist等及物动词所带的宾语从句,其谓语部分的should可以省.例如：

The old peasant suggested that a reservoir（should）be built at the foot of thehill,那位老农建议在这座山脚下修座水库.

“The experiment had failed!”“I suggest you（should）try again．”“实验失败了!”“我提议再试一试.”