diff --git a/lib/Common/functions.js b/lib/Common/functions.js
index a6206b8f..21c5d2de 100644
--- a/lib/Common/functions.js
+++ b/lib/Common/functions.js
@@ -12,6 +12,7 @@ global.think_require = function(name){
     if (_alias[name]) {
         var obj = require(_alias[name]);
         if (typeof obj == 'function') {
+            //修正子类继承的方法获取到正确的文件名
             obj.prototype.__filename = _alias[name];
         };
         return obj;
@@ -28,6 +29,7 @@ global.think_require = function(name){
     if (result) {
         var obj = require(result);
         if (typeof obj == 'function') {
+            //修正子类继承的方法获取到正确的文件名
             obj.prototype.__filename = result;
         };
         return obj;