in addition必须放在句首
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as well 也；同样地；还不如In addition不应该是副词短语，句首句末都行吗关于In addition(除了、还有)的用法： In addition相当于副词，通常只放在从句子的句首，后面接完整的句子。例如： This garden has the best collection of native plants. In addition, it contains numerous trees and flowers from overseas. 这座花园有当地植物的最佳珍藏。此外，它还有无数来自海外的花草树木。句尾一般不用。