You have caught colds.I suggest you to drink plenty of hot water改错，
问题描述：
You have caught colds.I suggest you to drink plenty of hot water
改错，
答
删去to即可
suggest sb （should）do sth.
答
You have caught a cold.I suggest you drink plenty of hot water.
你感冒了，我建议你多喝热开水。
catch a cold感冒
suggest sb. （should） do sth.
建议某人做某事
答
后半句错了.应是I suggest you （should ）drink plenty of hot water.