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Apuntes

• Subtopic: The Present Perfect Tense The present perfect tense is used to talk about events that started in the past and continue into the present. It is formed using the auxiliary verbs "have" or "has" followed by the past participle of the main verb. For example: - I have worked here for six months. - She has worked there since 2012. Contractions are commonly used in the present perfect tense: - I have = I've - She has = She's - Have not = Haven't - Has not = Hasn't • Subtopic: Base, Simple Past, and Past Participle Forms Regular verbs form their past participle by adding -ed to the base form. Here are some examples: Regular Verbs: - Base: call, change, close, look, study - Simple Past: called, changed, closed, looked, studied - Past Participle: called, changed, closed, looked, studied Irregular verbs have unique forms for the simple past and past participle. Here are some examples: Irregular Verbs: - Base: leave, make, read, see - Simple Past: left, made, read, saw - Past Participle: left, made, read, seen - Base: be, become, begin, come, drink - Simple Past: was/were, became, began, came, drank - Past Participle: been, become, begun, come, drunk - Base: drive, eat, g...