要是

例句

• yào要shi是xià下yǔ雨 ，jiù就bú不qù去 。

  If it rains, don't go.

• yào要shi是míng明tiān天bú不xià下yǔ雨 ，wǒ我men们jiù就qù去pá爬shān山 。

  If it doesn't rain tomorrow, we'll go mountain climbing.

用法