commencera 用英语:

Let's begin.

When your friends begin to flatter you on how young you look, it's a sure sign you're getting old.

May I begin by thanking every one for your warm welcome?

After tying up loose ends on the house, the carpenter gave the painter approval to begin work.

Let us begin today's lesson by opening our books to page 156, said the teacher.

He has endured sacrifices for America that most of us cannot begin to imagine.

In early youth, as we contemplate our coming life, we are like children in a theatre before the curtain is raised, sitting there in high spirits and eagerly waiting for the play to begin.

Courses in analysis begin with the fundamental notions of mathematical logic, important proof techniques, and the construction of real and complex numbers.

Is there an existing meaning if the person in charge does not take the responsibility to begin with?

I can't begin to fathom how someone could believe that one race is superior to another.

Instead use words like "some", "many", "often", and begin statements with openers like, "In my experience, ...", "Excuse me if I'm wrong, but...", "In many instances, ...."

Me? I can't even begin to draw buffalo, deer and horses so you can tell them apart.

Little by little you will begin to comprehend the text without translations or explanations.