diff --git a/lua/Trans/backend/offline.lua b/lua/Trans/backend/offline.lua
index 7880ca6..2ef618e 100644
--- a/lua/Trans/backend/offline.lua
+++ b/lua/Trans/backend/offline.lua
@@ -99,6 +99,8 @@ local formatter = {
             ['p'] = '过去式      ',
             ['r'] = '比较级      ',
             ['t'] = '最高级      ',
+            ['b'] = '比较级      ',
+            ['z'] = '最高级      ',
             ['s'] = '复数        ',
             ['d'] = '过去分词    ',
             ['i'] = '现在分词    ',