【急】这个句子中captain后的是什么成分?状语从句吗?一般会怎么用呢?

题目

【急】这个句子中captain后的是什么成分?状语从句吗?一般会怎么用呢?
A radio message from the mainland had been received by the ship's captain 【instructing him to give up the search】.括号里的是什么从句?instructing做什么成分,为什么一定要用-ing 而不用-ed形式呢?

答案

括号里面的不是从句哦~它是v-ing的非谓语形式,相当于一个定语从句who instructed him to give up the search.-ing通常是表主动,instruct 这个动作的发出者是 captain,所以用-ing.-ed通常是表被动.例如：the light in...