THE PRESENT PERFECT TENSE
Formation have / has (he,she,it) + V3, V-d /-ed Negative sentences and questions ?,- have / has e.g. I (we/you/they) have already written a letter. He (she/it) has already written a letter. He (she/it) hasn’t written a letter yet. Has he (she/it) already written a letter? Indicators never никогда, ever когда-либо, often часто, just только что, already уже, yet еще, not yet еще не today, this morning (week, month, year) и др.