现在开始上课。
现在开始上课,周末结束了。
现在开始上课?首先我给大家讲个故事?。
Now let's begin our class. First of all, I'll tell you a story.
I thought I'd begin today-this is, by the way, the regular practice.
现在开始上课,顺便说一句,这是惯例。
Let's get started. A couple of announcements.
现在开始上课首先宣布一些事情。
Let's get started. The weekend is over.
现在开始上课,周末结束了。
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