忍不住

tā yǎng de jī hū rěn bu zhù le

他痒得几乎忍不住了。

The itching was almost more than he could stand.

tā rěn bu zhù xuàn yào qǐ tā de xīn chē

他忍不住炫耀起他的新车。

He couldn't resist showing off his new car.

tā rěn bu zhù xiào qǐ lai

她忍不住笑起来。

She couldn't help herself and she laughed.

rěn bu zhù liú lèi

忍不住流泪

give way to tears

rěn bu zhù kū

忍不住哭

cannot help bursting into tears