Because he had not received a reply ,he decided to write again.
這是復合句,改成簡單句,就要用分詞結構.
having received 分詞的否定,就是直接前面加not ,
即:B的形式.Because he had not received a reply ,he decided to write again.這里的 received是什么成分？誰是謂語？Because he had not received a reply ,he decided to write again.這是復合句, 不是簡單句;因為他還沒有收到答復，他決定再寫信。Because he had not received a reply 這個分句,變成簡單句的時候, 過去完成時態(tài)的謂語動詞,就改成了分詞形式.也就是說Because he had not received a reply謂語動詞 received是過去完成時態(tài)，變成not having received a reply這個簡單句時，having received是過去分詞，那having received是不是過去分詞的完成時態(tài)呢？書上寫過去分詞沒有時態(tài)之分啊having received, 是(過去)完成時had received 的分詞形式.過去分詞本身自然沒有時態(tài)之分徹底蒙了，我再想想看，謝謝你這個語法點是比較難的,不要著急,找本書,或在網上搜下,系統(tǒng)看幾遍就好了.