资源介绍：本节课内容详实，从阅读到词汇讲解面面俱到。

探究新知
sb have a lot /much /everything in ~
                          some /a little /nothing in ~
             in common 共用的
             in common with sb.   和…一样
             It’s commonly believed that …
                   大家普遍认为
              It’s ~ knowledge among sb. that..
                                  众所周知
 common sense/knowledge 常识
 common disease常见病