2 sentences for 遭 (zāo — time)

1. 这是我头一遭来北京。

   zhè shì wǒ tóu yī zāo lái Běi​jīng.

   This is my first time in Beijing.

   Source: Dong Chinese Dictionary

2. 我还是头一遭听说这种事。

   wǒ hái​shi tóu yī zāo tīng​shuō zhè zhǒng shì.

   This is the first time I've ever heard of such a thing.

   Source: Dong Chinese Dictionary