主语（S）+would+have done.
再问： 不是 wouid have been +v.ing 吗？
再答： 呃、我看成是过去将来完成时了。。。 恩，是wouid have been +v.ing ……（是我看错了……） 【过去将来完成进行时】(The past future perfect continuous tense). 过去将来完成进行时表示从过去某一时刻看至未来某时以前会一直在进行的动作。 由“should/would+ have been +动词现在分词”构成。（下面看例句，比较容易理解） 如： He told me that by the end of the year he would have been living there for thirty years.
