起劲

hái zi men qǐ jìn de xué qí zì xíng chē

孩子们起劲地学骑自行车。

The children enthusiastically learned to ride a bicycle.

wán de shí fēn qǐ jìn

玩得十分起劲

play energetically

gōng zuò shí fēn qǐ jìn

工作十分起劲

work very energetically

tā yuè jiǎng yuè qǐ jìn

他越讲越起劲。

He warmed up as he went on with his speech.

tóng xué men yòu shuō yòu xiào shí fēn qǐ jìn

同学们又说又笑，十分起劲。

Laughing and talking, the students were in high spirits.

qǐ jìn gàn

起劲干

work energetically

tán de shí fēn qǐ jìn

谈得十分起劲

chat enthusiastically

qǐ jìn de gē chàng

起劲地歌唱

singing lustily

yóu yuán huì zhèng kāi de qǐ jìn shí tiān xià qǐ le yǔ

游园会正开得起劲时，天下起了雨。

It began to rain when the garden party was in full swing.