Simile
She is as cold as ice.
She is mean. It is cold, so she is chilly.
The classroom is like a zoo.
The classroom is chaotic and loud.
The cats eyes are two shiny coins.
Metaphor.
They sleep like a log.
They don't move when they sleep.
Life is a rollercoaster.
Life has ups (good parts) and downs (bad parts).
His voice is as deep as a horn.
Simile.
He is as light as a feather.
When he sings, his voice is music to my ears.
He has a good singing voice. He is talented.
The running children are a stampede of horses.
Metaphor.
He is as sneaky as a fox.
He is sneaky, and may try to trick others.
When my sister runs, she is a cheetah.
She is fast.
Our boots were as muddy as pigs hooves.
Simile
The teacher does not speak loudly.
The computers at school are ancient.
The computers at school are slow and old.
The pitcher threw the ball as fast as lightning.
Simile