lǎo / shī / ràng / wǒ / men / fēn / xī / zhè / duàn / huà / zài / zhěng / gè / yǔ / piān / zhōng / de / zuò / yòng老师让我们分析这段话在整个语篇中的作用。The teacher asked us to analyze the role of this passage in the whole text.