elective
UK/ɪ'lektɪv/US/i'lektiv/
B2
释义
adj.
Optional rather than required; chosen by the person, not compulsory.
可选的，选修的（非必修）。
adj.
Of medical treatment: chosen in advance rather than urgently necessary.
（医疗）择期的，非急需的。
adj.
Filled or decided by election.
选举产生的。
n.
An optional course of study.
选修课。
词根拆分
词根派生elect（挑、选）+ -ive（倾向于）=「关乎选择的」。elective course 是你自选的课；elective surgery 是事先选定、非急诊被迫的手术。共同点都是自主选择，而非被迫。
词根 lect 还连着 128 个词常用搭配
- 1.elective course选修课
- 2.elective surgery择期手术
- 3.elective subject选修科目
例句
- 1.
I chose photography as my elective this semester.
这学期我把摄影选作选修课。
- 2.
The operation was elective, so she scheduled it for spring.
这是择期手术，所以她安排在春天做。