因为我着凉了英语可以说成 "I caught a cold." 来源是着凉的人会感到寒冷，所以英文里可以用 "catch a cold" 来表示着凉的意思。

例句：

I caught a cold because I didn't wear a jacket when it was cold outside.
我没穿夹克就出门了，所以着凉了。
Be careful not to catch a cold when you go outside in the rain.
去雨天外面的时候，要小心不要着凉。
I think I'm catching a cold. My throat is sore and I feel a pttle chilly.
我感觉我要着凉了。我的喉咙很痛，还感觉有点冷。