我需要一张纸来写信。
wǒ xūyào yīzhāng zhǐ lái xiěxìn 。
I need a piece of paper to write a letter.
这本书的纸质量很好。
zhè běn shū de zhǐ zhìliàng hěnhǎo 。
The paper quality of this book is very good.
老师给我们发了很多纸。
lǎoshī gěi wǒmen fā le hěnduō zhǐ 。
The teacher gave us a lot of paper.