How does scrooge react when he sees the ghost of future ?

The Ghost of Christmas Yet to Come is the third and final spirit to visit Scrooge. He is a silent, giant phantom clad in a hooded black robe, has 1800 brothers, and will live for only one day.

The ghost presents Scrooge with an ominous view of his lonely death. He takes him to a poor, run down part of town, to the house of a young couple rejoicing at his death (as they know longer have to pay the mercilous Scrooge), to the Cratchit's home where they are mourning Tiny Tim's death, to Scrooges office where someone new has taken over, and to the graveyard where he see his name on a tombstone.

When the Ghost of the Future arrives Scrooge gets down on bended knee. He was filled with dread and frightened of the solemn figure. His knees trembled, but when the Ghost noticed his fear and apprehension he allowed him time to recover.

"The Phantom slowly, gravely, silently, approached. When it came near him, Scrooge bent down upon his knee; for in the very air through which this Spirit moved it seemed to scatter gloom and mystery.

It was shrouded in a deep black garment, which concealed its head, its face, its form, and left nothing of it visible save one outstretched hand. But for this it would have been difficult to detach its figure from the night, and separate it from the darkness by which it was surrounded.

He felt that it was tall and stately when it came beside him, and that its mysterious presence filled him with a solemn dread. He knew no more, for the Spirit neither spoke nor moved.

"I am in the presence of the Ghost of Christmas Yet To Come?" said Scrooge.

The Spirit answered not, but pointed onward with its hand.

"You are about to show me shadows of the things that have not happened, but will happen in the time before us," Scrooge pursued. "Is that so, Spirit?"

The upper portion of the garment was contracted for an instant in its folds, as if the Spirit had inclined its head. That was the only answer he received.

Although well used to ghostly company by this time, Scrooge feared the silent shape so much that his legs trembled beneath him, and he found that he could hardly stand when he prepared to follow it. The Spirit paused a moment, as observing his condition, and giving him time to recover." (Stave IV)