[誤] Don\'t interfere in his work. He is very busy now.
[正] Don\'t interfere with his work. He is very busy now.
注:interfere with 才是“打擾,妨礙”的意思,而 interfere in 卻表示“干涉”。
參考例句:By what right dost thou interfere? Art thou sent by the lord?你有什么權利干涉?你是上帝派來的嗎?