of后面如果只有人称代词的话，就用宾格形式；of后面如果除了人称代词还紧跟的有名词的话，就要用形容词性物主代词，也叫物主限定词。
例句
They swindled hundreds of dollars out of him.
他们诈骗了他好几百元。
I wouldn\'t dream of making fun of you.
我决不会拿你取乐。
It was wrong of me to get so angry.
我不该发这么大脾气。
That\'s a picture of me in my palmier days.
那是我风华正茂时的照片。
