Usage Examples Present Perfect

• I've never seen the sunrise. -
• Have you considered it? -
• Have you answered the letter? -
• What have you discovered? -
• Have you discovered it? -
• Have you seen the garden? -
• I have asked them. -
• I've never been there! -
• We haven't changed anything. -
• I've never celebrated a birthday. -
• Have I troubled you? -
• You've convinced me. -
• Have you finished it? -
• They've fired him. -
• They've attacked us. -
• What have I accomplished? -
• Have you seen this place? -
• I've underestimated you. -
• I've never seen the ocean! -
• Have you checked your e-mail? -