there to be 什么时候前加for?请问,there to be 什么时候前面要加上for?什么时候不加?下面第一句是 there to be,第二句是for there to be.为什么第

第一句是 there to be与want 的用法有关：want sb to do sth
第二句是for there to be与It's impossible 结构的用法有关：It's impossible for sb to do sth
以上两个结构中sb 的位置换成了there 而已.

请把there to be和for there to be分别用在主语、谓语、宾语、定语、目的状语、原因状语、结果状语、主语补足语、宾语补足语这些成分时的例句，都详细列举出来，谢谢！

want there to do sth / It's impossible for there to do sth 请你看看这两个搭配，怎么能像你说的作那么多句子成分？我只能给你几个例句： I expect there to be some green grass in front of the house I wish there to be a hospital in our village I want there to be a meeting to discuss the matter It's possible for there to be a bus stop here It's important for there to be some rules for the people here