
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!)

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!)