媒体类right to know 知情权information era 信息时代audience/viewers 观众information-explosion society 信息的社会various thrilling programs 各种各样激动人心的节目poor-quality programs 低质量节目electromagnetic radiation 电磁辐射psychological illnesses 心理疾病
1） 概念：表示过去的过去----|-------|-----|---->其构成是had +过去分词构成。那时以前 那时 现在 2） 用法a. 在told, said, knew, heard, thought等动词后的宾语从句。She said (that) she had never been to Paris.b. 状语从句在过去不同时间发生的两个动作中，发生在先，用过去完成时；发生在后，用一般过去时。c. 表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示'原本…，未能…'We had hoped that you would come, but you didn't.3) 过去完成时的时间状语before, by, until , when, after, once, as soon as。He said that he had learned some English before.By the time he was twelve, Edison had began to make a living by himself.Tom was disappointed that most of the guests had left when he arrived at the party.</p 产品：澳博培训供货总量：不限产品价格：议定包装规格：不限物流说明：货运及物流交货说明：按订单
