bìngjiàtiáo tōngcháng yào gēnjù bìngqíng kāi bùshì xiǎng xiě jǐ tiān jiù xiě jǐ tiān

病假条通常要根据病情开，不是想写几天就写几天。

A sick leave note is usually issued based on the actual illness; you can't just decide how many days to write.