Translation of "Switched" in Chinese

Tom and Mary switched places on the bench.

汤姆和玛丽在长凳上交换了位置。

I was hot, so I switched on the fan.

我很熱，就把電風扇打開了。

The first person to talk to me, when I had just switched schools and had no friends, was Tom.

自我转校之后就没交过什么朋友以来，汤姆斯第一个和我搭话的人。