I had to think of a way of preventing him from following me around all morning.这a way后面
问题描述：
I had to think of a way of preventing him from following me around all morning.这a way后面
为什么用of.不用to
答
think of 想出
我得想出一个办法来阻止他整个早上都跟着我
a way 后面如果用to应该用to prevent,当然可以这么用of 和to的区别是什么of只能作为一个介词来使用，后面接动词的话要用ing形式to可以做介词，表方向，如go to schoolto更多时候是作为一个不定式符号使用，后面接动词原形，如 Dad told me not to play on the road.