帮忙分析一下句子
Before father ______(come) back from work,I_____(begin) cooking . 这两个空应该填什么时态?具体分析一下好吗?
设计了一个情景,有助于回答: A:When did you begin cooking last night? B:At 7 p.m., 10 minutes before my father came back from work, I began cooking.
答:一楼说的不准。 has been done 现在完成时的被动语态。 has been doing 现在完成进行时。详情>>
答:B 被动语态,be found to do. A中的made与found均为过去分词,冲突!详情>>
问:hArd work 和hArd--working有什么区别
答:一个是名词 一个是形容词撒详情>>