改为定语从句?
Wearrivedhereontheday.Doyourememberit?
Theboysplyingtennisaremyfriends.
HehadaletterwritteninFrench.
SheisthegirlcalledMary.
Iknowtheboyrunninginthepark.
ThedayisourChineseteacher.Yousawherjustnow.