as well as是用就远原则。
当用作主语的成分后面跟有由but， except， besides， including， like， with， as well as， as much as， no less than， along with， in addition to， combined with， rather than， together with等引出的短语时。
谓语动词习惯上要与这些结构前面的主语保持一致(即与比较远的那个主语保持一致,简称“就远原则”)。
当as well as连接并列主语时（多数可理解为插入语，有无逗号均可），句中谓语动词的数应该和真正的主语（as well as前面的主语）保持一致。（就是某些人总结的“就远原则”）
Halen, as well as his brothers, has gone abroad.
