insist作及物动词时后面是不是必须加that?

nsist 用法与suggest 相似.insist作“坚持”说时,要用陈述语气；作“坚决主张；坚决要求”讲时,用虚拟语气.如：
When the son suggested that they should go to the park on Sunday, the expression on his father’s face suggested that he agreed with him.
当儿子提议星期天去公园时,父亲用表情表示了默许.
They insisted that he （should）be present at the ceremony.
他们坚决要求他出席这次典礼.
He insisted that he was innocent.=He insisted on his innocence.
他坚持说自己是无辜的.
因为这个词的意思觉得,做及物动词时候
insist that 的情况比较多

不肯定是不是，单基本上都是这样用的，好像没见过别的用法。