1)insist作坚决要求、一定要,其宾语从句常用与将来事实相反的虚拟语气,即should+动词原形,其中should可以省略.如:Her father insists that she (should) learn music after she leaves school.2) insist作坚持说、坚持认为时,用陈述语气.如:Alice insisted that she had done nothing wrong.在这里,insist作坚持说、坚持认为 不是虚拟语气 名词补语,意为‘下划线的’