not so much as...(连.都不...）
例：1.She won't（=will not） so much as look at David
她看都不看大卫一眼 .
2.She can not so much as write her own name.
她甚至连自己的名字也写不来.
这个句子在so much as thank前面是didn't就是did not,就符合了not so much as...的句型结构.
整句话意思就是“我找到他的钱还给他,他连谢都不谢.”