请解释为什么用having spent ,这是什么时态After having spent whole mornings on the river,I always go home with an empty bag.

请解释为什么用having spent ,这是什么时态After having spent whole mornings on the river,I always go home with an empty bag. most people prefer having spent money to having earned it为什么用 having spent和 having earned 而不用 spending和earning she swam to the shore having spent the night in the water.这里为什么用having spentA.having spent B.having spenting C.when spending D.had spent 来自新概念英语157页 after having spent whole mornings on the river.这句话用的是什么时态?第一次看到having spent这样词,这里为什么要写成这样的? 独立主格 时态The last bus having gone,we had to walk home.为什么用having goneAll the money having been spent,we started looking for work.为什么用having been spent不是问被动，而是完成进行时 having spent some time in the city...求高手解释这是什么时态吖?have用现在分词,spent是过去分词. look at outside 与 look outside 有什么区别 到底加不加 at After having spent my first day in the town center ,I decided to lose my way on my second day.请问，为什么用having spent ,不用 spent having spent/have spent 的区别 She swam to the shore_____the night in the water?A. having spentB. having spendingC. when spendingD. had spent书上的原话She swam to the shore after spending the whole night in the water?请说明为什么,这一点最重要.谢谢! having lunch in ...为什么用having i hope you ____ fun ______english this term.A.to have; learn B.having;fun C.are having ; to haveD.D.will have; learning请解释下为什么. He suggested our having a rest.用our 是什么意思啊?请解释详细点啊 解释英语句子结构I have spent 12 years studying in China 为什么study用进行时啊 这句话为什么可以这样写呢?关于这句话有两个问题想教大家.She swam to the shore having spent the night in the water.1.swam 不是过去式吗?怎么后面又可以用 having spent 现在完成式呢?2.我可以把这句话改成 after having spent whole mornings on the river,i always go home with the empty bag.能用after having 我觉得比较通顺 不能的话是为什么? after后面加-ing?新概念二册L20,讲动名词,有一句话：After having spent whole mornings on the river,I always go home with an empty bag.这里的having是因为after是连词吗?after在这里不是介词吧?为什么要用having? He gives people the impression _______ all his life broad.A) of having spent B) to have spent C) of being spent D) to spend 为什么选A,不选B? 英语翻译为什么用having called?