after having spent whole mornings on the river,i always go home with an empty bag这里的having可以改成have吗

After having spent whole mornings on the river,这句话spent后可不可以加the After having spent whole mornings on the river,这句话spent后可不可以加the After having spent whole morning.这句主谓宾各是什么? 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? 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. after spending the whole night in the water可不可以改成...after having spent...越详细越好,快.Then she swam to the shore after spending the whole night in the water.可不可以改成...after having spent... After having spent whole mornings on the river和After spenting whole mornings on the river这两名话有什么区别? 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? having spent/have spent 的区别 after having spent whole mornings on the river可以改成 After I have spent..吗原话为 After having spent whole mornings on the river,I always go home with an empty bag.可以改成After I have spent whole mornings on the river,I always go home 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 after having spent whole mornings on the river,i always go home with an empty bag这里的having可以改成have吗 一个英语句子的困惑.after having spent whole mornings ong the river i always go home with an empty请问having spent 是什么时态?这句话应该是一个完成时,请问这个完成时表示什么? after having lived for over twenty years in the same district, albert hall w英译汉 after i having breakfast. 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? 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! 用after having done造句