现在完成时就是指:过去发生或已经发生的动作对现在造成的影响或结果。其基本构成是:have/has+done;过去完成时是指:在过去某个特定时间点或动作之前就发生的行为,即过去的过去。其基本构...
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...
例:The government promised that a new highway would be being built next July. 政府承诺说第二年7月将有一条新的高速公路正在修建。 15 过去将来完成时:(would have done) 例:I believed by the end of that year an advanced version of that software would hav...
例:The government promised that a new highway would be being built next July. 政府承诺说第二年7月将有一条新的高速公路正在修建。 15.过去将来完成时:(would have done) 例:I believed by the end of that year an advanced version of that software would hav...
成人高考学位英语备考练习:非谓语动词 一、不定式 (一)基本结构 to do to be doing to have done to be done to have been done 学位英语真题汇编 1、Judging from his manners at the party, he does
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