1、医生：总称doctor,牙医dentist ;内科医生physician;外科医生surgeon

2、see看见或者因某事要见某人。例如：(1)I need to see the doctor我需要看医生  (2)The boss wants to see me老板要见我

3、want的用法（1）want +名词/代词 I want some envelopes （2）want +不定式 He wanted to play in the garden ten minutes ago