例句：
可用于向某人提供某物或邀请某人做某事。
You use "Can I", "Could I", and "Shall I" when you offer to help someone.
这一问题询问一个原因，由于目的提供了第一位的答案，因此它是第一因，而其名副其实也一目了然，因为如果我们问：某物为何产生了一个结果？
Which question calls for a cause. Now since the end provides the first answer, it will be the first cause. That it really does so is evident, for if we ask: Why does something produce an effect?