Mr Green had lived in New York for ten years before he came to China.("来”中国已过去，而先前“住”在纽约更过去！) We had learned 1000 words by the end of last term. （“上期期末”已过去，而是在其前“学”的就更过去了！）
过去完成时？我只听说过现在完成时呀。是一般过去时吧
