More than a dozen students in that school ( )abroad to study medicine last year.

问题描述:

More than a dozen students in that school ( )abroad to study medicine last year.
Asent Bwere sent Chad sent Dhad been sent答案为B,解析是;last year 构成一般过去时态表示将来的行为,以为快要成了 .为什么last year构成了一般过去时态,就要用被动语态呢?

因为More than a dozen students 是宾语,作为谓语的send就要使用被动形式 be sent,过去式就是were sent.如果把句子改为主动形式应该是:()sent more than a dozen students in that school abroad to study medici...为什么More than a dozen students 是宾语,谓语的send就要用被动形式?就像下面所说的“学生是被送到国外去的,是被动的动作,不是主动的, 所以动词当然要用被动的”。因为根据意思,学生是被送到国外去的,不可能出现“学生自己送自己去”的,这不符合常识。