dentist ['dentist]
n.牙科医生
词根记忆:dent(牙齿)+ist(表人)→牙科医生
doctor ['dɔktə]
n.医生
guide [ɡaɪd]
n.领路者,导游,指南,路标
ready ['redi]
adj.准备好的 vt.做好……的准备
say [sei]
vt.说
teacher ['ti:tʃə]
n.教师
who's
(=who is, who has)