Personification:
"The parlour was dead and Mildred kept peering in at it with a blank expression as Montag paced the floor and came back and squatted down and read a page as many as ten times, aloud." (Page 32)
This use of figurative language illustrates Montag's loneliness and feelings of isolation.
Simile:
"He stared at the parlour that was dead and grey as the waters of an ocean that might teem with life if they switched on the electronic sun." (Page 33)
The simile above helps us to understand how technology alienates us from reality.
Metaphor:
"Maybe the books can get us half out of the cave. They just might stop us from making the same damn insane mistakes!" (Page 34)
This metaphor illustrates the huge barrier between Montag and Mildred. He needs reality, whereas, she is content and happy to live stagnantly through the lives of fictional beings.