Examples
nà那shì是rén lèi人类dì yī cì第一次zài在yuè qiú月球shàng xíng上行zǒu走。
那是人类第一次在月球上行走。
That was the first time that a man walked on the moon.
去年我第一次去了日内瓦。
Last year was the first time I went to Geneva.
我三天前第一次见汤姆。
I met Tom for the first time three days ago.