Read it through once

“My dear Miss Eliza, why are not you dancing? Mr. Darcy, you must allow me to present this young lady to you as a very desirable partner. You cannot refuse to dance, I am sure, when so much beauty is before you.” And, taking her hand, he would have given it to Mr. Darcy, who, though extremely surprised, was not unwilling to receive it, when she instantly drew back, and said with some discomposure to Sir William,--