현재 완료시제 (경험) ... 우리,,, 만난적이 있을까요?

1. ~해본 적이 있다' 라는 의미로 과거부터 지금까지의 경험에 대해 말할 때도 현재완료 시제를 쓴다. 
1. I have eaten sushi before. It was delicious. 전에 초밥을 먹어본 적이 있다. 
2. Look at that rainbow! Wow. I haven't seen a rainbow before. 
   
3. Excuse me. Have we met? Yes, I think we have.
4. How many times have you flown in airplane? Only once.
   
   
2. 지금까지 살아오면서 어떤 일을 해본 경험에 대해 말할 때 현재완료 시제와 ever 또는 never를 자주 함께 쓴다. 
1. Ever은 '한번이라도' 라는 의미로 어떤 일을 해본 경험이 있는지 물을 때 자주 쓴다. 
• Have you ever tried Thai food? 한번이라도 태국 음식을 먹어본 적이 있니? No. What is it like? 
• I haven't been to this zoo before. Have you ever been here? 한번이라도 여기에 와본 적이 있니?
• Have you ever worked abroad? No, but I want to. 
• Have you ever had a pet? Yes, I had two cats when I was young. 
  
  
2.  Never는 "해본 적이 전혀 없다"의 의미로 어떤 일을 해본 경험이 없다는 것을 강조해서 말할 때 쓴다. (never+ 긍정문) 
1. Tony is excited about moving to Greece. He's never lived in a foreign country. (never+ 긍정문)
2. I've never climbed a mountain before This is my first time. 전에 등산을 해 본적이 전혀 없다. 
3. We have never owned a car. We always take the subway.
4. I really trust Arnold. I've never doubted him. 
   
   
3. 경험의 횟수를 말할 때 + 현재완료 시제
• before(전에) once(한 번) twice (두 번) three/four/.../many times(세/네/.../ 여러번)
• Have you skied before?
• I've worn a tuxedo once.
• Is this your first time in Paris? No, We've been here twice before. 
• That is a great book. I've read it three times.
• We've visited the Metropolitan Museum many times. It's our favorite place. 
  
  
4. The best~ I've ever...: 지금까지 내가... 해본~ 중 최고
• Thank you so much for the bicycle. It's the best present. I've ever received! (지금까지 내가 받아본 선물 중 최고야!)
• How was your holiday in Hawaii? Fantastic! It was the best vacation I've ever taken. 
• What's your favorite coffee? The best coffee I've ever tasted is from Indonesia.