We do use other forms.这个do use 好别扭啊.解释一下?

What do we use water to do?这个句子中use是什么词性? what can we use computers to do? when do we use capital letter What do you use? when we use public document ,where do we see them 汉译英 你知道这把椅子的其他用途吗?Do you know any other use we can ( ) ( )th use to do和use doing use to do和use to doing what do we use it for?we use it to study English. What do we use these.for We use it for.造个句子 How is the water?What do we use water to do?What can we do t for,use,we,what,glass,do 连词成句