Learn French: Ne te brûle pas, ce four est chaud. - Don't burn yourself, this oven is hot.

In affirmative commands (like brûle-toi, meaning 'burn yourself'), the pronoun comes after the verb and changes to toi. But in negative commands, the pronoun stays as te and is placed before the verb, right between ne and the verb. So it becomes ne te brûle pas.

Since the command is for 'you', why isn't there an 's' at the end of brûle?

For regular verbs ending in -er (like se brûler), you always drop the final 's' in the tu form when giving a command. So while the normal present tense is tu te brûles, the command form drops the 's' to become brûle.

Why do we use ce for 'this' in ce four? Could I use cet?

Ce is the masculine singular word for 'this' or 'that'. You only use cet before a masculine noun that starts with a vowel or a silent 'h' (like cet arbre). Since four (oven) starts with a consonant, we must use ce.

Do you pronounce the 'd' at the end of chaud?