Do your mean to say you've given up your job?你真的放弃了那份工作？

mean to say: admit readily 愿意承认（一般用于疑问句），强调语气。
　　例句：
　　You don't mean to say you hit her? 你当真打了她？
　　You don't mean to say you talked to him about me? 你不会真的和他谈起我了吧？