Give each student an experience card, such as: - Treated an unusual animal - Traveled somewhere unexpected - Made an important decision - Experienced an emergency Students must describe the experience without naming it. Classmates guess what happened and ask questions.

Write these examples: 1. "I have treated an animal with a fracture." 2. "I treated a dog with a fracture last month." 3. "Have you ever responded to an emergency?" 4. "Did you respond to an emergency yesterday?" 5. "She has never worked at an animal shelter." 6. "She worked at an animal shelter in 2022." Students work in pairs to investigate the differences in meaning, form, time references, and question structure. Each pair presents its findings, then the class builds a comparison chart. Present Perfect Experience without a specified finished time have/has + past participle Have you ever…? ever, never, already Simple Past Completed event at a finished past time Past form of the verb Did you…? yesterday, last week, ago, in 2022 Also clarify that Present Perfect can describe situations connected to the present, not only life experiences.

Complete the sentences: 1. I __________ (treat) several emergency patients in my career. 2. Yesterday, the veterinarian __________ (evaluate) a dog with severe trauma. 3. __________ you ever __________ (see) a patient in shock? 4. We __________ (stabilize) the cat two hours ago. 5. She __________ never __________ (perform) that procedure. 6. The veterinarian __________ (recommend) surgery last Friday. 7. They __________ (respond) to many emergencies this year. 8. I __________ (make) an important decision yesterday. 9. __________ you __________ (finish) the report yet? 10. The owner __________ (call) the clinic this morning. (Assume it is now afternoon.) Answer Key: 1. have treated; 2. evaluated; 3. Have/seen; 4. stabilized; 5. has/performed; 6. recommended; 7. have responded; 8. made; 9. Have/finished; 10. called.

Students work in pairs and interview each other. The first question must use Present Perfect: "Have you ever responded to an emergency outside your workplace?" If the answer is yes, students continue using Simple Past: - When did it happen? - Where were you? - What happened? - What did you do? - What was the outcome? Other topics include traveling abroad, making a difficult decision, helping an injured animal, and learning a new skill. Switch partners halfway through the activity.

Give students this case: Case File: Emergency at the Clinic Dr. Miller has handled many emergencies throughout her career. Last Saturday, she received a dog that had suffered a serious injury. The patient arrived in shock, and the veterinary team stabilized it before conducting additional examinations. Dr. Miller has worked in emergency medicine for several years, but she described this case as particularly challenging. Students must prepare eight interview questions for Dr. Miller: four using Present Perfect and four using Simple Past. Then students work in pairs. One plays Dr. Miller and invents plausible details consistent with the case; the other conducts the interview. They switch roles.

Correct these sentences: 1. I have treated a dog yesterday. 2. Have you ever saw a fracture like this? 3. She has worked at the clinic in 2020. 4. Did you ever treated a patient in shock? 5. We haven't finished the report last night. 6. He has made an important decision two hours ago. 7. Have you responded to the emergency last Friday? 8. I never have seen that type of injury. Answer Key: 1. I treated a dog yesterday. 2. Have you ever seen a fracture like this? 3. She worked at the clinic in 2020. 4. Have you ever treated a patient in shock? 5. We didn't finish the report last night. 6. He made an important decision two hours ago. 7. Did you respond to the emergency last Friday? 8. I have never seen that type of injury.

Students write 80–100 words about an important experience. Requirements: begin with Present Perfect to introduce the experience, use Simple Past to explain when and what happened, and include at least three Week 3 vocabulary items. Suggested opening: "I have experienced several challenging situations in my career, but one of the most memorable happened last year..." After writing, students exchange texts and check tense accuracy.

Complete the sentences: 1. I __________ (visit) that clinic three times in my life. 2. We __________ (respond) to an emergency yesterday. 3. __________ you ever __________ (make) a difficult decision? 4. She __________ (finish) her report an hour ago. 5. The veterinarian __________ never __________ (see) that condition before. Answers: 1. have visited; 2. responded; 3. Have/made; 4. finished; 5. has/seen.