我新二学到73课学不下去了～求帮助～

你每课学下来语法都明白吗？

问你一个，after having spent whole mornings on the river,I always go home with an empty bag.这句after having spent 是什么情况？

哎，同求帮助，背到新二的58课了，越背越费劲儿，求鼓励，求帮助。