in addition另外,此外=besides;what's more 等用法通常结尾用逗号.例如;
In addition, they hunted wild cattle, pigs and horses and made use of many wild plants.
除此之外,他们还会狩猎野生的牛、猪、马,并且懂得利用许多野生植物。
in addition to: 加之.to后常加名词或代词等,如:
In addition to English, there are some materials in French, German, H pu india, Portuguese and Spanish. 除了英语,还有一些材料是法语、德语、北印度语、葡萄牙语和西班牙语的。
in addition 另外,后接从句
in addition to 除...之外,后接动词ing形式,因为to 是介词,介词后要跟ing形式