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接受建议)动词·做...
as if/though+主语+did/had done…好像……(表示现在或将来的情况用过去时;表示过去的情况用过去完成时)[参考句型4] [例句] Our head teacher treats us as if we were her own children, so all the students in our class think highly of her. Alan talked about R...
解析:句中人称代词we和反身代词yourself指代不一致。 改为:And we can also know the society by serving it ourselves. 六、累赘 同学们在写书面表达时应尽量做到简洁:写句子没有一个多余的词,写段落没有一个多余的句子;能用单词的就不用词组,能用词组的就不用从句或...
Don’t seeblue movies. blue movie/film 是“色情电影”的意思,类似的表达还有exploiter, erotic film, porn。一定不要把“黄色电影”说成是yellow movie。 Yellow pages也不是“色情...
had done → had been done 常搭配的时间状语:by then, until then,by that time, before 2000, by the end of last month, by the time he was ten,… 过去完成时的用法: 1.过去的过去;到过去某个时间为止的动作 2.hardly/scarely(过完)… when(一般过去) ...
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