train vi.& ut接受训练;培训，训练
观察 I'm training to be a volunteer for the Olympic Games.我正在为成为奥运会的一名志愿者而接受训练。
They are training for the boat race.
他们正在为划船比赛接受训练。
We train them to make use of reference books.我们培训他们使用参考书。

探究 train用作_及物_动词时，后接名词或代词作宾语，还可以接“as/to be＋名词/形容词”或动词不定式作宾语补足语的复合宾语。
He trained as a teacher before becoming an actor.他在成为演员之前受过师资培训。
Sue is training to be a doctor.休正在接受医生培训。