现在我就给大家试讲一下这本书中的一篇课文 用英语怎么说呢？

Now let me try to explain a text in this book for you

请采纳

Now, I'm going to make a trial lecture for you （guys） from a passage of this book.
如果是正式的，就不要说guys好了。

Now let me try to explain a text in this book for you

请点推荐答案~~！