Usage Examples Present Perfect vs Past Simple

• I've known Sarah for five years. -
• Mary has not started her essay yet. -
• Did we take this bus last time? -
• My grandfather did not work at a bank. -
• Has Rachel ever studied Hindi? -
• When did Alice move to Portland? -
• They haven't lived here for years. -
• Rosie didn't bake this cake, I did. -
• I have already finished my project. -
• Has Anna passed this exam already? -
• Have you ever met a celebrity? -
• I didn't do it on my own. -
• Laura has never been abroad. -
• We went to Paris three months ago. -
• Anna has met me today. -
• I didn't go to the university last week. -
• I had pancakes for breakfast. -
• Has your mother done the shopping already? -
• My brother didn't play hockey at school. -
• My sister was born in Italy. -