in addition,in spite of这两个词组分别是什么性质的词组?怎么看是介词词组还是副词词组?

in addition 是副词词组,放到两个句子中间,有逗号.in addition表示另外,一般用于插入语,跟what's more比较接近In addition ,there are six other applicants.what's more,there are six other applicants除此之外, ...