diff --git a/HelloStudents/HelloStudents.csproj b/HelloStudents/HelloStudents.csproj
index e4cb61f..60a71ca 100644
--- a/HelloStudents/HelloStudents.csproj
+++ b/HelloStudents/HelloStudents.csproj
@@ -46,6 +46,7 @@
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Student3099Ham.cs" />
+    <Compile Include="Student3108Kim.cs" />
     <Compile Include="Student3103Kim.cs" />
     <Compile Include="Student3199Ham.cs" />
     <Compile Include="StudentBase.cs" />
diff --git a/HelloStudents/Program.cs b/HelloStudents/Program.cs
index f757be0..019bc19 100644
--- a/HelloStudents/Program.cs
+++ b/HelloStudents/Program.cs
@@ -1,9 +1,11 @@
-using System;
+// using은 java의 import 같은 역할
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
+// namespace는 java의 패키지 같은 역할
 namespace HelloStudents
 {
     class Program
@@ -48,6 +50,14 @@ static void Main(string[] args)
             // 3106
             // 3107
             // 3108
+            students.Add(
+                new Student3108Kim()
+                {
+                    FirstName = "지영",
+                    LastName = "김",
+                    StudentNumber = 3108,
+                    BaseYear = 2021
+                });
             // 3109
             // 3110
             // 3111
diff --git a/HelloStudents/Student3108Kim.cs b/HelloStudents/Student3108Kim.cs
new file mode 100644
index 0000000..63c0686
--- /dev/null
+++ b/HelloStudents/Student3108Kim.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HelloStudents
+{
+    class Student3108Kim : StudentBase
+    {
+        public override string Hello()
+        {
+            return "안녕? 나는 " + this + "이야!";
+            // return "안녕? 나는 " + this.ToString() + "이야!";
+        }
+    }
+}