insist后面接什么虚拟语气 什么时候接should 什么时候接had done?还有什么形式的

insist虚拟语气的的用法：宾语从句谓语由“should+动词原形”构成,其中的should在美国 英语中通常可以省略.如：
I insisted that he (should) stay.我坚持要他留下.
He insisted that I (should) go with them.他坚持要我同他们一起去.
Rose insisted that he be present.罗斯坚持要他出席.
The detective insisted that he should have a look.警探坚持要查看.
动词insist后接宾语从句时,也可用陈述语气,两者的区别是：若谓语动词所表示的动作尚未发生,或尚未成为事实,则用虚拟语气；若谓语动词所表示的动作已经发生,或已经成为事实,则要用陈述语气.比较：
He insisted that I had read his letter.他坚持说我看过他的信.
He insisted that I should read his letter.他坚持要我看他的信.