Tomorrow, it's supposed to be hot outside, so you're going to have to wear sunblock. Your skin will be safer with brands of sunblock that offer several layers of protection. Always take care of your body. It's the only one you have! This is a principle to live by.
Its to It's (X2):
We could replace this word with "it is," so we want the contracted form "it's."
Your to You're:
We could replace this word with "you are," so we want the contracted form "you're."
You're to Your:
This is referring to possession, so we need to use your. We could not replace this with "you are."
Principal to Principle:
Even though the words are pronounced the same, they do not have the same meaning. Principal means first in order of importance, is related to the original investment when talking about money, and can be someone in authority, like the principal of a school. Principle is a fundamental truth that is a foundation for a belief.
