He wrote a book about how I could be made to work.这个句子,how引导的是什么从句?

题目

He wrote a book about how I could be made to work.这个句子,how引导的是什么从句?

答案

about是介词,介词后面要加上宾语

所以how这里是引导的介词about的宾语

他写了一本关于我如何可以工作的书