been和done的区别 been是be的过去分词;done是do的过去分词。常见的用法是have done和have been done,have done是主动形式的现在完成式,have been done是被动式的现在完成式。 1、done的含义及相关短语用法 形容词adj.已完成的;煮熟的;合乎礼仪的;合乎规矩的感叹词表示...
【变式探究】It is said that his parents ___ him to be a high achiever, but he turned out to be a nobody. A.expect B.were expecting C.would expect D.have been expecting 【答案】B 【解析】考查时态。句意:据说他的父母一直期望他能大有作为,但结果他成了一...
3. 基本结构:have/has + done 否定形式:have/has + not +done. 一般疑问句:have或has。 4. since的三种用法 1) since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。 例如:I have been here since 1989. 1989起,我一直在这儿。
根据提干关键词the last paragraph定位到文中最后一段,最后一段关键信息词while(尽管)引导的内容为重点信息:“尽管还有很长的路要走,这种趋势势不可挡”,故可以排除D: is not competitive enough with regard to its cost。而根据第二句“have a meaningful effect in...
2、They have done things they ought ___ A. not to do B. not to be done C. not to have done D. not having done 3、I' m sorry I couldn't get in touch with him before he left, I ___ him earlier. A. had a telephone B. have phoned C. should have...
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