Usage Examples Present Perfect vs Past Simple

• It is the worst day I have ever had. -
• The teacher hasn't seen you this week. -
• Has James just left? -
• John liked my new book. -
• Mary has not started her essay yet. -
• Did they go to the university with you? -
• I haven't bought a new computer yet. -
• I didn't do it on my own. -
• My grandfather did not work at a bank. -
• Have you ever met a celebrity? -
• It hasn't rained a lot this year. -
• Have you ever been to Ukraine? -
• You've spilt the water and now the floor is wet. -
• Why did Anna go to Manchester two weeks ago? -
• I have already finished my project. -
• They haven't lived here for years. -
• We have just got back from our holidays. -
• Where did you work five years ago? -
• I've known Sarah for five years. -
• We went to Paris three months ago. -