I can help kids with swimming中swimming为什么要加ingcan 后不是原型吗?

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I can help kids with swimming中swimming为什么要加ingcan 后不是原型吗?

I can help kids with swimming中swimming为什么要加ingcan 后不是原型吗?
I can help kids with swimming中swimming为什么要加ing
can 后不是原型吗?

I can help kids with swimming中swimming为什么要加ingcan 后不是原型吗?
with 是介词 所有介词后面的动词+ing