You can go now. I don't need you anymore. 你现在可以走了。我不再需要你了。

　　We need you back. When can you come back? 我需要你回来。你什么时候能回来？

　　Why do you need me anyway? 你到底为什么需要我？

　　Is there a leak in your bathroom? 洗手间漏水吗？

　　Yeah, I need a plumber to fix it.  恩，我得找个水管工修修。