14 延续动词与瞬间动词 1) 用于完成时的区别 延续动词表示经验.经历, 瞬间动词表示行为的结 果.不能与表示段的时间状语连用. He has completed the work. 他已完成了那项工作. I've known him since then. 我从那时起就认识他了. 用于till / until从句的差异 延续动词用于肯定句.表示"做--直到--" 瞬间动词用于否定句.表示"到--.才--" He didn't come back until ten o'clock. 他到10 点才回来. He slept until ten o'clock. 他一直睡到10点. 典型例题 1. You don't need to describe her. I her several times. A. had met B. have met C. met D. meet 答案B. 首先本题后句强调对现在的影响.我知道她的模样.你不用描述.再次.several times告知为反复发生的动作.因此用现在完成时. 2.---I'm sorry to keep you waiting. ---Oh, not at all. I here only a few minutes. A. have been B. had been C. was D. will be 答案A. 等待的动作由过去开始.持续到现在.应用现在完成时. 【查看更多】
