past perfect

PastPerfect

;past;pastsimple转述句;perfect;

pastperfectuniv

【pastperfect用法】作业帮

过去完成时表示在过去某个时间或过去的某个动作之前发生的动作.即:过去的过去.构成:had + 过去分词如: We had learned 2000 words by the end of last term. 这句的意...

作业帮

Past Perfect

Past Perfect is a New Opportunities Fund grant-aided project run jointly by Durham and Northumberland County Councils. I

pastperfectorgu

past perfect过去完成时_图文_百度文库

Past Perfect Tense 概念:过去完成时表示在过去某一时间或动作之前已经发生或 完成了的动作,即“过去的过去( past-in-the-past )”. 构成方式: 肯定句: had+动词的过去分...

百度文库