Usage Examples Present Perfect vs Past Simple

• Did they go to the university with you? -
• I didn't do it on my own. -
• My mum has lost her keys and cannot get into the house now! -
• Jack has seen this film before. -
• It is the worst day I have ever had. -
• Have you ever been to Ukraine? -
• Has your mother done the shopping already? -
• The teacher hasn't seen you this week. -
• John liked my new book. -
• My grandmother read this newspaper yesterday. -
• I didn't go to the university last week. -
• Has Anna passed this exam already? -
• Who is the smartest person you have ever met? -
• When did Alice move to Portland? -
• Laura has never been abroad. -
• I haven't bought a new computer yet. -
• My brother didn't play hockey at school. -
• What did your husband do last month? -
• Did you have a pet when you were a child? -
• Rosie didn't bake this cake, I did. -