want to 后接动词原形
I need to start shopping there.
我也得去那儿逛逛了。
问题
为什么不能说 I want to shopping，而要说 I want to shop？
解答
因为 want to 后面要接动词原形，不能接 shopping。想说“想去逛”应该是 I want to shop there，或者 I want to go shopping there。而 shopping 是动名词，只能跟在 start、finish、enjoy 这类词后面，比如 I need to start shopping there。