我初次见到她，觉得她很聪明。
wǒ chūcì jiàndào tā ， juéde tā hěn cōngmíng 。
When I saw her for the first time, I thought she was very smart.
这是我初次参加这个活动。
zhè shì wǒ chūcì cānjiā zhègè huódòng 。
This is my first time participating in this event.
初次尝试新食物总是很有趣。
chūcì chángshì xīn shíwù zǒngshì hěn yǒuqù 。
Trying new food for the first time is always interesting.