he has been in the army since he was sixteen.这个句子是正确的吗?不是连续动词加一段时间吗?

题目

he has been in the army since he was sixteen.这个句子是正确的吗?不是连续动词加一段时间吗?
since he was sixteen 是一段时间吗？连续动词候只能加一段时间吗？

答案

He has been in the army since he was sixteen.这个句子是完全正确的,表示“自从他十六岁起就在部队”.
since 表示“自从,自...以来”,since he was sixteen 是表示一段时间.连续动词可以与一段时间连用,而瞬间动词是不能与一段时间连用的.