请解释最后一句为什么用完成时态I answered,'but I can't pay the bill.I haven't got my bag.'

请解释最后一句为什么用完成时态I answered,'but I can't pay the bill.I haven't got my bag.' 最后一句为什么用完成时态In a few minutes he returned with my bag and gave it back to me.'I'm very sorry,' he said ' My dog had taken it into the garden.He often does this.' how long have you been like this?为什么用完成时态?请类似的举例 帮忙解释,最后一句 1.i'll go with u as soon as i finish my workhe will return the book as soon as he has done with it.两句话的结构不是差不多吗,为什么第二句后面用完成时态?能否举出相关主句什么时态,从句就用什么形态类型的句 I prefer being outside.John says.将两句合为一句是否有时态变化？为什么？ In her letter,she said that she would come to England next year.请翻译此句,并解释would come 是什么时态,句子为什么用这个时态 This is the first time that I have been abroadthe first/second/third time 后面跟的定语从句,时态为什么用完成时 I haven’t heard from her since she went abroad.请问,since 不是说要用完成时态吗?为什么这里是过去式呀? would后面为什么用完成时态?Who can go to bed early and miss hours of excitement with computer games?I would have played all night! sorry to have woken you up yesterday还有i am sorry that i woke you up yesterday为什么第一个用完成时态 而 第二个用过去时态 求高手解答 许嵩白马非马的赏析?请尽量解释最后一句`` 最后一句I might as well have them,话已讲完为什么最后是,而不是. 英语时态的区别 例句中为什么要用现在完成时原句为：I intend to go to after i have completed my high school course.想问这里用complete可以吗,为什么要用完成时,有特殊意义吗?应该是go to college 哪些时间状语用完成时态 not until一定要用完成时态么 有already一定要用完成时态吗? 为什么 in the last few years 用完成时态一般都直接说它是标志词