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高一英语复习：难点讲解 be harmful (to)be harmful (to)be harmful (to ) (对)有害例1：Smoking is harmful to your health. 吸烟有害于你的健康。例2：Reading in bed is harmful to your eyesight. 躺在床上看书对你的视力有害。【相关链接】1) do harm to 对有害例1：Eating a lot and exercising little do harm to your health. 吃得多而锻炼少对你的健康有害。例2：That kind of work does much harm to workers lungs. 那种工作对工人的肺部健康有极大的损害。例3：It will do you no harm. 这对你无害。例4：Theres no harm in your staying up late occasionally. 你偶尔迟睡无伤大雅。2) harm vt. 伤害例如：Years of hard work harmed her a lot. 多年的劳累对她的身体伤害很大。