首先,我们应该讨论要点。
___To ___begin ___with, we should discuss the main points.
公寓很小,但一开始我们需要的东西都有。
The apartment was small, but it had everything we needed ___to ___begin ___with.
首先,让我自我介绍一下。
___To ___begin ___with, let me introduce myself.