I tremble to think what will happen .

我 想到将要发生的事情 就 不寒而栗。

I tremble to think what is going to happen .

想到即将要发生的事情，我 感到 非常 焦虑。

I tremble to think what would happen said Rhett .

“我 真 不敢 想象那会发生什么，”瑞德说。