5、动词的用法insist的此种用法只能接从句作宾语。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. Whether和if的用法C1.Wehave