Usages of shuìzháo
他 看着 看着 书， 就 睡着 了。Tā kànzhe kànzhe shū, jiù shuìzháo le.
As he was reading and reading, he fell asleep.
我 太 累 了， 一会儿 就 睡着 了。wǒ tài lèi le, yíhuìr jiù shuìzháo le.
I was too tired and soon fell asleep.
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