我想这句话里what we want to do is 后面的部分应该是单词is的表格，所以应该是名词性的结构，所以我想单词measure应该是用动名词measeuring才对，请教我如此理解有无错误？
For oceans melting Greenland, what we really want to do is measure the oceans, measure the ice and watch them change together year on year.
备注:mesure the oceans, 与后面to measure ice and watch them...构成三个并列不定式短语作表语。最后一个不定式短语结束了用连词and连接，前面描述还没结束，用逗号连接。前面部分含有do的形式，作表语不定式一般省略不定式符号to直接写动词原形，而且不定式作表语描述“主语以后发生动作行为或者主语以后的状况”，动名词作表语没办法描述表达这层含义。
【1】Tom's hobby is swimming.汤姆喜好是游泳。【动名词作表语】
【2】Tom's dream is to be a pilot.汤姆的梦想是成为一名飞行员。【不定式作表语】
