Traveling around Paris by taxi usually costs a lot of money .为什么travel要加ing而不是TO trave
问题描述：
Traveling around Paris by taxi usually costs a lot of money .为什么travel要加ing而不是TO trave
答
两个都可以
【to travel around】和【traveling around】都可以
一个是to不定式做主语,一个是ing形式做主语
翻译：坐出租车游遍巴黎要花费许多钱.