Usage Examples Present Perfect vs Past Simple

• I have already finished my project. -
• Did you have a pet when you were a child? -
• Have you ever met a celebrity? -
• I had pancakes for breakfast. -
• Have you ever been to Ukraine? -
• My brother didn't play hockey at school. -
• Who did you meet at the party yesterday? -
• I didn't do it on my own. -
• Jack has seen this film before. -
• I stayed home last night. -
• Why did Anna go to Manchester two weeks ago? -
• John liked my new book. -
• Did we take this bus last time? -
• You've spilt the water and now the floor is wet. -
• Mary has not started her essay yet. -
• We have just got back from our holidays. -
• Has Anna passed this exam already? -
• Rosie didn't bake this cake, I did. -
• Did they go to the university with you? -
• I haven't bought a new computer yet. -