advice
1.单数形式advice和复数形式advices在公文和商业文件里都用作“报告”或“消息”解，如According to advice(s) from our agent, business is improving。在一般文字里该避免。letter of advice是“报告信”或“通知信”，如报告寄货或通知汇款。
2.说“劝告”advice前面不可加an，也没有复数形式。说“一项劝告”该说a piece of advice或a bit of advice，“多项劝告”是pieces of advice或bits of advice。用复数形式advices作“劝告”解是古语，现在不用。
3.take advice是“征求他人的意见”，take medical advice是“请医生诊视”，take legal advice是“请律师”，take the advice是“听从这劝告”，take his (或your等) advice有时是“听从他（或你等）的劝告”，有时是“征求他（或你等）的意见”。
4.his advice to read poetry是“他劝人读诗歌”，his advice on reading poetry是“他对于读诗歌的劝告”。
5.advice后面有时接以that引导的从句，那从句里用should或虚拟现在式。例如：His father's advice that he (should) drop the habit of smoking should be observed.
