重点讲解：
1. middle ages
（欧洲历史上的）中世纪（指公元476年罗马帝国灭亡至公元1500年左右这段时期，尤指这段时期的后半部分）；
eg. The death of King Richard III in1485 rang down the curtain on the Middle Ages.
1485年理查德三世国王的去世标志着中世纪的结束yU]UaP*qS[Y。
eg. In the Middle Ages, philosophy and theology were inextricable.
在中世纪，哲学与神学是不分的K)QW@(%B-kL&fA8,9s。
2. used to do sth.
过去常常做某事；
eg. I used to live in London.
我曾经在伦敦居住过G3.hdO6En=。
eg. Moslem women used to veil their faces before going into public.
信奉伊斯兰教的妇女出门之前往往用面纱把脸遮起来6G9Vi[J4sEn+。
3. be famous for
从……闻名；著称；
eg. Switzerland is famous for its watchmaking and beautiful scenery.
瑞士以制表业和美丽的风景而闻名DuyBC~I.#Hg|c。
eg. David is famous for his billiards technic.
大卫因他的台球技术而出名BzhTEX!g|SZ1。
4. be known for
以…闻名的；
eg. She was known for the quickness of her wit.
她以头脑灵活见称ko+L!n.j~Z。
eg. It is known for its handicraft products.
这地方因出产手工艺品而闻名ZIq|FCi|]AQwdxMa7s。