喜不自胜

tā què shí xǐ bù zì shèng

她确实喜不自胜。

She was positively beaming with pleasure.

tā xiǎng dào míng nián xià tiān jiāng yǒu de hǎi àn jiù shēng yuán de gōng zuò biàn xǐ bù zì shèng

他想到明年夏天将有的海岸救生员的工作，便喜不自胜。

He is licking his chops about the lifeguard job he will have at the beach next summer.