Grammar. Have or Has Use the present perfect to talk about an indefinite time in the past. Form the present perfect with "Have or Has" and a past participle. Use Have = I - You - We - They. Use Has = He - She - It. Affrimative and negative statements. 1. We haven´t met them. 2. She hasn´t called him. Questions. Yes/No Have you met them? Yes, we have. / No, we haven't. Has she called him? Yes, she has. / No, she hasn't. Important Fact For regular verbs, the past participle from is the same as the simple past from. Example: Open - Opened. Study - Studied. ----------//---------//------------//----------//---------// Grammar. Already, ever, before, and never. Use ever or before in yes / no questions about life experiences. - Have you ever eaten Indian food? - Has he been to Paris before ? Use yet or already in yes / no questions about recent experiences. - Have you toured Quito yet ? - Has she already been to the top of the Eiffel Tower? In affirmative and negative stat...