Past Perfect v Present Perfect 现在完成时和过去完成时的区别
 
 
Wang Fei:   Welcome to Question and Answer of the Week, from the BBC Learning English restaurant. I'm Wang Fei.
 
Finn:  And I'm Finn. And today we'll be sampling some of the finest Chinese foods and English tenses.
 
Wang Fei:   That's right, today we'll be serving up some 羊肉串儿 some 小龙虾 and some…
 
Finn:  Some present perfect tense, with a little past perfect on the side!
 
Wang Fei:  别担心，我们不是在说什么疯话。最近我们收到很多电子邮件询问现在完成时 present perfect 和过去完成时 past perfect, 它们之间的区别。
 
Finn:  Yes, one annoying thing about learning English is the tenses. 
 
Wang Fei:  时态。
 
Finn:  时态。So to cheer us up we thought we'd order some tasty food…
 
Wang Fei:  并且在我们说完每个句子之后，你试着告诉我们用了现在完成时态还是过去完成时态？ 你听到这个哨声之后，马上告诉我们答案。
 
Finn:  So listen carefully for the noise! Now, let's open the menu. Wang Fei, how about some 回锅肉?
 
Wang Fei:  回锅肉? Have you tried it before? (哨声… 现在完成时)
 
Finn:  Yes, I have tried it. (哨声… 现在完成时) It's great!
 
Wang Fei:  So, let's order some 回锅肉。 What else do you think Finn?
 
Finn:  Hmmm… how about some 口水鸡? Have you eaten it before? (哨声… 现在完成时)
 
Wang Fei:  Of course! And you?
 
Finn:  I hadn't tried it before I went to China. (哨声… 过去完成时) But I love it, let's order some. And how about some 羊肉串儿!
 
Wang Fei:  羊肉串儿你也知道? So, you went to Xinjiang last year didn't you? 
 
Finn:  I did.
 
Wang Fei:  Had you tried 羊肉串儿 before you went to Xinjiang? (哨声… 过去完成时)
 
Finn:  Yes, I tried them a long time ago.
 
Wang Fei:  Ok, I also would like to order… some fish and chips?  
 
Finn:  Fish and chips, some 炸鱼和薯条? That's British food! 
 
Wang Fei:  是的。
 
Finn:  Had you tried it before you came to Britain? (哨声… 过去完成时)
 
Wang Fei:  Actually, I hadn't tried it. (哨声… 过去完成时) You can't get them in China, can you?
 
Finn:  No, you can't. Ok, waiter! Some 回锅肉、口水鸡、羊肉串儿 and some fish and chips, please!
 
Wang Fei:  好的，刚才我们点了菜，在上菜之前，我们回顾一下现在完成时态和过去完成时态的区别。现在完成时用来表示以现在的时间为起点，之前你获得的某种经验或完成的事情。这时候，我们用 has 或 have 加过去分词。例如：
 
Finn:  Have you tried 羊肉串儿? I have tried 羊肉串儿。
 
Wang Fei:  那过去完成时态怎么用呢？我用过去完成时态用来表达以过去的某个时间为起点，之前你获得的某种经验或完成的事情。这时候，我们要用 had 加过去分词。例如：
 
Finn:  Had you tried羊肉串儿 before you went to Xinjiang? I had tried羊肉串儿before that, yes.
 
Wang Fei:  好的，你现在知道了现在完成时和过去完成时之间的区别。其实，就这么简单。
 
Finn:  And here comes the food. Right, we'll tuck in to our feast, and you can ask us any other questions about the English language.
 
Wang Fei:  Yes – email us at chinaelt@bbc.co.uk. What's that?
 
Finn:  These羊肉串儿 are amazing!
 
Wang Fei:  And this 口水鸡 is also  great. Mmmm. Excuse us. 
 
Finn:  We'll just continue eating!
 
Wang Fei:  Bye!
 
Finn:  Bye!