他听到问题后点头表示同意。
tā tīngdào wèntí hòu diǎntóu biǎoshì tóngyì 。
He nodded to show his agreement after hearing the question.
老师问我们是否明白,大家都点头了。
lǎoshī wèn wǒmen shìfǒu míngbái , dàjiā dū diǎntóu le 。
The teacher asked us if we understood, and everyone nodded.
他点头表示他会参加聚会。
tā diǎntóu biǎoshì tā huì cānjiā jùhuì 。
He nodded to indicate that he would attend the gathering.