那 Nā 个 gè 男孩 nán hái 摔倒 shuāidǎo 时 shí 把 bǎ 膝盖 xīgài 蹭 cèng 破 pò 了 le .

That boy scraped his knee when he slipped and fell.

比尔 Bǐ ěr 只得 zhǐ dé 扶 fú 住 zhù 吉尔,不然 bùrán 她 tā 就 jiù 会 huì 摔倒 shuāidǎo 在 zài 地 de .

Bill had to support Jill or she would have fallen to the floor.

我 wǒ 推 tuī 了 le 他 tā , 他 tā 摔倒 shuāidǎo 了 le ,磕 kē 破 pò 了 le 膝盖 xīgài .

I shoved him. He fell and scraped his knee.

他 tā 因 yīn 摔倒 shuāidǎo 而 ér 严重 yánzhòng 扭伤 niǔ shāng 了 le 脚踝 jiǎo huái 。

He had wrenched his ankle badly from the force of the fall.