	Form	Example
➕	I/you/we/they have ('ve) + participle he/she/it has ('s) + participle	She's sold two items.
➖	haven't / hasn't + participle	She hasn't sold any today.
❓	Have/Has + subject + participle?	Have you made a profit? — Yes, I have.

	Form	Example
➕	have/has + been + -ing	I've been making T-shirts for two years.
➖	haven't/hasn't been + -ing	He hasn't been advertising much.
❓	Have/Has + subject + been + -ing?	Have you been waiting long?

Participles: regular verbs add -ed (work→worked); irregular ones must be learnt: make→made, sell→sold, buy→bought, grow→grown
been never changes — only have/has agrees with the subject.

✗ She have sold two items✓ She has sold — tercera persona = has✗ I've been make T-shirts✓ I've been making — been + verbo en -ing siempre