一辆车突然转向，接下来我知道的就是，我在人行道上了。

A car suddenly swerved, and ___the ___next ___thing ___I ___knew, I was on the sidewalk.

我在等公交车，接下来我知道的就是它已经开走了。

I was waiting for the bus, and ___the ___next ___thing ___I ___knew was that it had already left.

我们在徒步，接下来我知道的就是，暴风雨来了。

We were hiking, and ___the ___next ___thing ___I ___knew, a storm had rolled in.