Perfect tenses используются для описания, обозначения результата действия или явления, без точного обозначения совершения события to have + v3 present perfect tense есть результат действия к данному моменту + have v3 has ( 3л.ед.ч. - he,she,it) she has gone to work. we have played tennis. - have not v3 has ( 3л.ед.ч. - he,she,it) she hasn’t gone to work. we haven’t played tennis well. ? have v3? has has she gone to work? have we played tennis yet?