我直觉感到要出乱子了。

I had an intuition that something awful was about to happen.

你们必须再派一些士兵驻扎在岛上以防出乱子。

You must station some additional men on the island in case of trouble.

她刚才看见杜新箨好像是最镇静，最先料到不会出乱子的。

She had noticed just now that he seemed perfectly calm as if he had known all along that everything would be all right.