besides 和 in addition放在句首时有什么区别

有细微的区别
1. in addition
used for adding an extra piece of information to what has already been said or written 用于句首，表示对已经提及过的信息的添加【要用逗号和后边的句子隔开】
如：People gain valuable work experience and, in addition, employers can afford to employ them.
2. besides
1）in addition to someone or something else that is being mentioned 用于提及过的【不用逗号和后边的句子隔开】
如：
Besides making money, the company aims to set high standards of quality anddesign.

2）used when you are adding another stronger reason to support what you are saying但是多一个用法，就是可以添加一个更有说服力的理由在支持自己说的事情【这个时候要用逗号隔开】
It's too late to invite any more people. Besides, you know how Tim hates parties.

1.in addition
used for adding an extra piece of information to what has already been said or written 用于句首,表示对已经提及过的信息的添加【要用逗号和后边的句子隔开】
如：People gain valuable work experience and,in addition,employers can afford to employ them.
2.besides
1）in addition to someone or something else that is being mentioned 用于提及过的【不用逗号和后边的句子隔开】
如：
Besides making money,the company aims to set high standards of quality anddesign.
2）used when you are adding another stronger reason to support what you are saying但是多一个用法,就是可以添加一个更有说服力的理由在支持自己说的事情【这个时候要用逗号隔开】
It's too late to invite any more people.Besides,you know how Tim hates parties.

您好

beside：在旁边；与…相比；和…无关
例句：
He sat down beside me and rested his head on my shoulder.
他在我身边坐了下来把头靠在我的肩膀上
in addition to：除…之外
例句：
In addition to that, he really enjoying all the running!
除此之外，他确实非常享受跑步！

besides是除了的意思，in addition是此外还有