Needs to be

If something is a necessity, you must have it or do it, or it must happen. In a sense this is a kind of modal.

If you saw the terrible conditions in which these people are living, you would appreciate the necessity to step up foreign aid. Something needs to be done soon, to help these poor people.

For anyone who is running a large company, a computer specialist is absolutely necessary to keep business running smoothly. Every large company needs a computer guy.

In affirmative sentences, uses need to do something (WITH "to"):

I do not understand their need to sell the house. They need to sell quickly because they have already bought another house. This house definitely needs to be sold quickly.