Thanks to everyone for being so welcoming. I look forward to working with all of you.
请告诉你，这里的being是做非谓语动词的连系动词，还是助动词，或者是助动词，怎么样不同？
刘老师大意了。助动词包含基本助动词（do ,have, be)和情态助动词. 基本助动词中的be和have都可以有非谓语形式的。
Having finished his homework，Tom went out to play. Having是助动词have的目前分词。
She hates being laughted at by others. 动名词被动语态作宾语。being是助动词be的动名词形式。
I‘m so glad to have shaked hands with President Xi. to have为助动词have的不定式形式。
网友句子中的being是系动词而不是助动词be的动名词，是由于welcoming前的程度副词so明确表示welcoming是形容词作表语。所以being是系词，而不是助动词。
