quietly的比较级是：more quietly

quietly

美 /ˈkwaɪətli/

英 /ˈkwaɪətli/

adv.

安静地；秘密地；平稳地

比较级 more quietly

最高级 most quietly

双语例句：

He was still lying there quietly.

他还静静地躺卧在那里。

She went quietly downstairs, wondering briefly why she had awakened so early.

她悄悄地走下楼梯，心里思忖她自己为什么醒得这样早。