Holmes cast a swift glance of triumph at me. "Oh, he mentioned his name, did he? That was imprudent. What was the name that he mentioned?"

"His name," said the cabman, "was Mr. Sherlock Holmes."

Never have I seen my friend more completely taken aback than by the cabman's reply. For an instant he sat in silent amazement. Then he burst into a hearty laugh.

"A touch, Watson - an undeniable touch!" said he. "I feel a foil as quick and supple as my own. He got home upon me very prettily that time. So his name was Sherlock Holmes, was it?"

"Yes, sir, that was the gentleman's name."

1)  如何分析比较句 Never have I seen my friend more completely taken aback than by the cabman's reply ？  尤其是than后的 by the cabman's reply不完整，难以理解。

2)  I feel a foil as quick and supple as my own - 这句什么意思呢？ 还有这里的as...as...比较句搞不清成分和意思。

3）got home upon me  这是什么意思呢？