有时候你可能与某个人有着很亲密的关系补充：
Occasionally you may have a close relationship with someone who typically gets called Sir, Madam, Mr or Mrs (for example, a business executive, a celebrity, a professor or a person older than yourself). At some point this person may give you permission to use his or her first name. In English we use the phrase "on a first name basis" or "on first name terms" to describe a relationship that is not as formal as it seems it should be. To describe this you would say, for example: "Pete's mom and I are on a first name basis" or "My teacher and I are on first name terms."
有时候你可能与某个人有着很亲密的关系，比如一个企业主管、一个名人、一教授或者比你自己年长的人。别人都称呼他/她为Sir/Madam, Mr/Mrs，而在某种程度上这个人可能会允许你直接叫他/她的名字。英语里我们就用"on a first name basis"或者"on first name terms"来表达这样一段并不像人们所以为的那么拘于礼节的关系。来看两个例句：Pete's mom and I are on a first name basis. 皮特的妈妈和我是直呼其名的好朋友。My teacher and I are on first name terms. 我和老师很熟。
