swimming是swim的进行时吗?为什么是ming/

为什么swim的现在进行时是swimming.play的现在进行时是playing? swim的名词形式是swimming,还是swimmer那为什么swim的名词形式是swimming我做了swimmin I want to go swimming.为什么是swimming而不是swim?有同义句吗. swim 为什么这在进行时 变成swimming? 为什么说“游泳队”是swim team而不是swimming team呢? 英语问题请教：go swimming 这个词组里的swim为什么会是分词形式?谢谢! swim可以作名词为什么是go swimming 而have a swim Can you help the student with swimming?为什么是swimming而不是swim? swim为什么写成成现在进行时要双写?swimming? swim为什么变成swimming? 是swim team 还是swimming team? He likes ____(swim)in the ocean.答案是swimming吗?可不可以用to swim,