Hello, everyone.

How are you today？

Are you ready？

Let's begin.

Read the text together.

Read after me.

Class begins.

You did a good job.

Thank you for your help.

Morning everyone.

这些开场白旨在引起学生的注意，为课堂活动做好铺垫，并营造积极的学习氛围。在实际教学中，教师可以根据具体情况和学生的反应灵活运用这些开场白。