Hello everyone! I'm Teacher Alex, and this is Student Sam. Today we're learning about the Present Perfect tense. The structure is simple: have or has plus the past participle. For example, 'I have finished my homework' connects a past action to the present moment, unlike 'I finished my homework yesterday' which is simple past.
Now let's explore the three key usage patterns of present perfect. First, for actions at unspecified past time, like 'Have you ever been to Paris?' Second, for actions continuing from past to present, such as 'I have lived here for 5 years.' Third, for recent actions with present relevance, like 'She has just arrived.' Each pattern connects past and present differently.
Let's analyze common mistakes students make with present perfect. Sam is confused about three main areas. First, mixing present perfect with simple past - we can't say 'I have seen him yesterday' because yesterday is specific past time. Second, incorrect time marker placement - 'just' comes before the main verb. Third, wrong auxiliary choice - 'she' takes 'has', not 'have'. Let's practice corrections together.
Now let's master time markers with present perfect. We need to categorize time expressions into two groups. Definite past time markers like 'yesterday', 'last week', 'in 2020', and 'ago' cannot be used with present perfect because they specify exact past moments. Indefinite time markers like 'just', 'already', 'yet', 'ever', 'never', 'since', and 'for' work perfectly with present perfect as they don't specify exact times.
Time for our team competition! Alex leads Team A and Sam leads Team B. We'll have multiple choice questions, sentence corrections, and timeline matching activities. Questions get progressively harder, covering present perfect usage, time markers, and common mistakes. Teams earn points for correct answers. Let's see who wins! The current score shows Team A leading with 85 points versus Team B's 75 points. Great job everyone!