There are three auxiliary verbs in English: be, do and have. Auxiliary verbs come before main verbs.
Here is a handy mini guide to help you.
https://www.cambridgecatania.it/wp-content/uploads/2019/06/6285f1ff.png504504JenniferAnnSmithhttps://www.cambridgecatania.it/wp-content/uploads/2019/09/logo-B-trasparente.pngJenniferAnnSmith2019-06-17 17:27:142019-06-20 10:39:16There are three auxiliary verbs in English