在英语课堂上，教师可以使用以下话术来组织和管理课堂：
开始上课
"Good morning/afternoon, everyone! Today, we're going to dive into the exciting world of English language learning."
"Let's start class. It's time for class."
问候与介绍
"Hello, boys and girls / children. Good morning / afternoon, everyone."
课堂常规
"Stand up / Sit down, please."
"Who is on duty today？"
"Is everyone / everybody here / present？"
"Is anyone/anybody absent？"
课堂互动
"Who’s absent？"
"Today we’re going to learn about..."
"Let’s get started!"
"Who would like to say something about this topic？"
"Now, let's have a discussion. Group of four, please. Group leader, organize the discussion."
教学辅助
"Please look at the board / screen."
"Can you describe what you see？"
课堂结束
"That's the end of the class. Thank you for your attention."
这些话术可以帮助教师在英语课堂上有效地引导学生，确保课堂秩序，并鼓励学生积极参与学习。建议教师在备课时准备一些常用话术，以便在课堂上灵活运用。