它 + Verb / Verb + 它
它 (tā) is the third-person pronoun used to refer to animals, objects, or abstract things, meaning "it." While spoken Chinese uses the same pronunciation tā for he, she, and it, the written forms differ: 他 for males, 她 for females, and 它 for non-human referents. It functions as a subject or object in a sentence.
这只狗很聪明,它会自己开门。
Zhè zhī gǒu hěn cōngming, tā huì zìjǐ kāi mén.
This dog is very smart; it can open the door by itself.
我买了一本书,它的内容很有趣。
Wǒ mǎi le yì běn shū, tā de nèiróng hěn yǒuqù.
I bought a book; its content is very interesting.
那棵树很老了,它已经有一百年了。
Nà kē shù hěn lǎo le, tā yǐjīng yǒu yì bǎi nián le.
That tree is very old; it's already a hundred years old.