“…that she should do sth.”等于“…that she do sth.

大家知道,在用于表示命令,建议、决定等词语之后的that一分句中,一般要用be型虚拟式,即动词用原形,也可以用should加不定式替代.例如:PeoPle are demandingthats址should zeaveleave}the eompany.然而我们并不能因此在“…that she should do sth.”和“…that she dosth.”之间划等号.首先,美国英语倾向于用没用“should”的be型虚拟式.美国人写的语法书或出的考题常常认为只能用be型虚拟式,不能用should十不定式.例如美国出版的Trudy Aronson写的“English Granunar Di罗st"一书(1984,P76)就这样认为:(wrong):(Her friends insist she sh口uld co,e early·) Right:Her friends insist she come eariy· Quirk等人在《英语语法大全》(1985)(以下简称《大全)))中把be型虚拟式称为“命令虚拟式”(mandative subjun.