not to mention   (TTS發音)

without saying anything about更不必說

    It's impossible for me to go to Green's party tonight. I've got to babysit for my sister，not to mention write a book report and prepare for an exam. 今晚我不可能去參加格林的晚會了。我得照看我姐姐的小孩，更不用說寫讀書報告和準備考試了。