Usage Examples Present Perfect vs Past Simple

• Rosie didn't bake this cake, I did. -
• I didn't do it on my own. -
• I haven't bought a new computer yet. -
• Has your mother done the shopping already? -
• John liked my new book. -
• Have you ever been to Ukraine? -
• Where have you travelled lately? -
• You've spilt the water and now the floor is wet. -
• My brother has been to Mexico three times. -
• I didn't go to the university last week. -
• Emily didn't see you yesterday. -
• I had pancakes for breakfast. -
• They haven't lived here for years. -
• I have already finished my project. -
• My dad broke his leg last month. -
• It is the worst day I have ever had. -
• Did we take this bus last time? -
• I've known Sarah for five years. -
• My grandfather did not work at a bank. -
• What interesting foods have you eaten in your life? -