It can be used in various contexts:
* As an adjective: "Le livre est en anglais" (The book is in English).
* As a noun: "Il parle anglais" (He speaks English).
* As a noun referring to a person: "Les Anglais sont connus pour leur humour" (The English are known for their humour).
It's important to remember that "anglais" is a masculine noun in French.