He wrote a book on this subject last year.划分句子成分?
问题描述：
He wrote a book on this subject last year.划分句子成分?
答
he主语，wrote谓语，a book 宾语，on this subject介词短语作介词宾语，last year作时间状语！
答
he 主语 wrote 谓语 a book 宾语 on this subject last year 状语