我是来自美国南部,孟菲斯是美国田纳西州的一个城市。在这个城市,“双重名”是非常普遍的,这意味着大家的“名”和“中间名”都可以一起被使用。例如:Emma Claire, Anna Cate, Martha Kay。这件名字都可以当作是她们日常的名字。这大概是文化的差异!在美国,不同地区的人们对中间名,有着自己的爱好和习俗。比起其他英语国家,美国是更加普遍使用"双重名"
Some people choose to incorporate their middle name into their everyday name. Going back to my own family! I am from the Southern part of the United States - Memphis, Tennessee. In this area it is very common to have 'double names', meaning that people use their first name and their middle name together. For example: Emma Claire, Anna Cate, Martha Kay. They use both names as their main name. This answers part of your question - it is a cultural thing! Its something that people in different parts of America love to do. It is more common in the US than other English speaking countries.
中间名只用首字母;resource:pinterest最后,在拼写全名时,只需要拼写中间名的首字母。大家只用中间首字母是大概是为了把全名简短化。如果有人使用一个很普遍的名字。例如:John Smith,很多人就用中间名的首字来区分是不同的人。这仅仅是一个比较老的习俗,当你如果看见全名的中间出现一个字母,那就是代表着中间名,只是简短了很长的名字!
And lastly, to answer your other question