暗自

xīn lǐ àn zì tòng kǔ

心里暗自痛苦

secretly heartbroken

àn zì liú lèi

暗自流泪

cry to oneself

àn zì fā shì

暗自发誓

swear to oneself

àn zì qìng xìng

暗自庆幸

congratulate oneself

tā àn zì xī wàng dān cān jiā pài duì

她暗自希望丹参加派对。

She was secretly hoping that Dan would be at the party.

àn zì gāo xìng

暗自高兴

secret rejoicing

yī xiǎng dào yào zài nà biān zài dāi shàng yī tiān tā jiù àn zì jiào kǔ

一想到要在那边再待上一天，他就暗自叫苦。

He groaned inwardly at the thought of spending another day in that place.