Usage Examples Present Perfect vs Past Simple

• They haven't lived here for years. -
• I didn't do it on my own. -
• My brother has been to Mexico three times. -
• Mary has not started her essay yet. -
• Jack has seen this film before. -
• It is the worst day I have ever had. -
• I had pancakes for breakfast. -
• Emily didn't see you yesterday. -
• I've known Sarah for five years. -
• My sister was born in Italy. -
• John liked my new book. -
• Anna has met me today. -
• Who did you meet at the party yesterday? -
• Have you ever been to Ukraine? -
• What is the most beautiful place you have ever been to? -
• You've spilt the water and now the floor is wet. -
• Where did you work five years ago? -
• Has Anna passed this exam already? -
• I didn't go to the university last week. -
• Has James just left? -