diff --git a/Presentation/LoginPage.php b/Presentation/LoginPage.php
index 6af1d0a950dfff693b3950278108a352adf0b5f1..cab7139ff06df3c83ed9e560c99f23e02906b1c4 100644
--- a/Presentation/LoginPage.php
+++ b/Presentation/LoginPage.php
@@ -1,13 +1,13 @@
 <?php
 require_once '../Logic/config.php';
 
-// 检查是否有POST请求提交表单
+// Check if there is a POST request to submit the form
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-    // 处理表单提交的数据
+    // Processing data submitted by the form
     if ($_POST["formType"] == "loginForm") {
-        session_start(); // 启动会话
+        session_start(); // start a session
 
-        // 表单中获取的用户名和密码和学生id
+        // Username and password and student id retrieved from the form
         $username = $_POST['username'];
         $studentId = $_POST['studentId'];
         $password = $_POST['password'];
@@ -16,26 +16,26 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         $stmt->execute();
         $users = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
-        // 遍历所有用户
+        // Iterate over all users
         $loggedIn = false;
         foreach ($users as $user) {
-            // 检查用户名和密码是否匹配
+            // Check that the username and password match
             if ($user['account'] === $username && $user['password'] === $password) {
-                // 检查用户ID是否匹配
+                // Checking for user ID matches
                 if ($user['id'] == $studentId) {
-                    // 登录成功,执行相应操作
-                    $_SESSION['user_id'] = $user['id']; // 将用户 ID 存储在会话中
-                    $_SESSION['user_type'] = $user['user_Type']; //储存用户类型
+                    // Login successfully, perform the corresponding operation
+                    $_SESSION['user_id'] = $user['id']; // Storing user IDs in the session
+                    $_SESSION['user_type'] = $user['user_Type']; //Storage user type
 
-                    // 更新用户的在线状态为 'online'
+                    // Update user's online status to 'online'
                     $updateOnlineStatus = DB->prepare("UPDATE user SET is_online = 'online' WHERE id = ?");
                     $updateOnlineStatus->execute([$user['id']]);
 
                     $loggedIn = true;
-                    break; // 退出循环
+                    break; // exit cycle
                 } else {
-                    // 用户名和密码匹配,但用户ID不匹配
-                    echo "<script>alert('学生账号不在数据库中,请重试');</script>";
+                    // Username and password match, but user ID does not match
+                    echo "<script>alert('Student account is not in the database, please try again');</script>";
                     echo "<script>window.location.href = 'LoginPage.php';</script>";
                 }
             }
@@ -48,7 +48,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             exit; // 结束脚本执行
         } else {
             // 登录失败,显示提示消息
-            echo "<script>alert('用户名或密码错误,请重试');</script>";
+            echo "<script>alert('Username or password is wrong, please try again');</script>";
             echo "<script>window.location.href = 'LoginPage.php';</script>";
         }
 
diff --git a/Presentation/chatPage.php b/Presentation/chatPage.php
index 8b4b095dea9ccbf86e5b831ed57e7ad9320e0da3..a615222ad0af194bd4726780c4b30d90da134e36 100644
--- a/Presentation/chatPage.php
+++ b/Presentation/chatPage.php
@@ -11,7 +11,7 @@
 <body>
 <!-- 在线用户列表容器 -->
 <div id="sidebar">
-    <h2>在线用户:</h2>
+    <h2>Online Users:</h2>
     <ul id="online-users-list">
         <!-- 在线用户将在这里列出 -->
     </ul>
diff --git a/Presentation/register.php b/Presentation/register.php
index 35afeb37cb3188ceb082c308263eed88d755f0b7..fec8471c8968fb36f253c478c2bf8225f8b0d28f 100644
--- a/Presentation/register.php
+++ b/Presentation/register.php
@@ -21,14 +21,14 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
 
         if ($existingUser) {
             // 学生已存在,提示用户已注册
-            echo "<script>alert('您已注册');</script>";
+            echo "<script>alert('You are already registered');</script>";
             echo "<script>window.location.href = 'LoginPage.php';</script>";
             exit;
         }
 
         //判断密码是否相同
         if ($password != $confirm_password) {
-            echo "<script>alert('密码与确定密码不匹配!');</script>";
+            echo "<script>alert('The password does not match the OK password!');</script>";
             echo "<script>window.location.href = 'register.php';</script>";
             exit;
         }
@@ -60,7 +60,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         // 循环结束后,检查是否找到匹配的学生
         if (!$match) {
             // 注册失败,显示提示消息
-            echo "<script>alert('抱歉,您不是本校学生/老师');</script>";
+            echo "<script>alert('Sorry, you are not a student/teacher at this school');</script>";
             echo "<script>window.location.href = 'register.php';</script>";
             exit;
         }