大学英语课堂教师常用口语包括以下几种：

开始上课

Let’s start now. / Let’s begin our class / lesson.

Stand up, please.

Sit down, please.

问候

Hello, boys and girls / children.

Good morning, class / everyone / everybody / children / boys and girls.

Good afternoon, class / everyone / everybody / children / boys and girls.

How are you today？

考勤

Who’s on duty today？ / Who’s helping this morning / today？

Is everyone / everybody here / present？

Is anyone away？ / Is anybody away？

Is anyone absent？ / Is anybody absent？

Who’s absent？ / Who’s away？

Where is he / she？

其他常用口语

Have you got everything ready for class？

Let’s wait outside our classroom.

Let’ go in.

Come on now.

Hurry up.

Hi, guys, let’s go inside.

这些口语在大学英语课堂中非常常见，教师会根据具体情境选择合适的表达方式来开始课程、进行问候、管理课堂秩序等。建议教师在备课时熟悉这些常用口语，以便在课堂上能够更加流畅地进行教学。