* This: When used as a demonstrative adjective (like "this book" or "this chair"), it is usually translated as "this".
* That: If it refers to something farther away, it can be translated as "that".
* It: If "ce" is part of a pronoun like "ceci" or "cela", it often translates to "it" or "this".
* The: When "ce" is used with a noun and has a definite article function, it is often translated as "the."
Examples:
* Ce livre: This book
* Ce fauteuil: This chair
* Ceci est un crayon: This is a pencil
* Cela est impossible: That is impossible
* Ce que je sais: What I know
It's important to remember that these are just common translations, and the best way to understand the meaning of "ce" is to consider the surrounding context.