Present Perfect: Yet, Just, Already, and Still

1. Overview: The Present Perfect tense is used to talk about actions or experiences that are relevant to the present. "Yet," "just," "already," and "still" are adverbs that help us add more information about the timing or status of these actions. 2. Cases: - "Yet" is used in negative sentences and questions to indicate that something has not happened up to now. Example: I haven't finished my homework yet. Have you finished your homework yet? - "Just" is used to describe something that happened very recently. Example: She has just eaten lunch. - "Already" is used to indicate that something has happened before now, often earlier than expected. Example: They have already seen that movie. - "Still" is used to express that a situation continues to be true up to now, often in negative sentences. Example: He still hasn't called me. 3. Things to Pay Attention To: - "Yet" is typically used in questions and negative sentences, but it is not used in positive statements. Example: I have finished my homework. (not "I have yet finished my homework.") - "Still" can be used in positive sentences as well, but it often has a sense of surprise or emphasis in negatives. Example: She is still working on her project. 4. Additional Notes: Common mistakes include using "yet" in affirmative sentences or confusing "just" and "already." Remember that "just" emphasizes recent actions, while "already" implies something happened sooner than expected.