The snow melts fast.

Meaning: This sentence describes snow changing from a solid to a liquid state at a rapid pace.

Choice of Words: The is a definite article that specifies a particular noun. Snow is a noun that refers to frozen water crystals falling from the sky. Melts is a verb that means to change from a solid to a liquid state. Fast is an adjective that describes the speed of the melting.

Alternative Expressions

The snow melts quickly.

Meaning: This means that the snow is turning into water very fast.

Choice of Words: Snow is the white stuff that falls from the sky in winter. Melts means to change from a solid to a liquid. Quickly means to happen in a short amount of time. When you put them together, "The snow melts quickly" means that the snow is changing from a solid to a liquid in a short amount of time.

The snow disappears fast.

Meaning: This means that the snow is going away very fast.

Choice of Words: Snow is the white stuff that falls from the sky in winter. Disappears means to stop being visible or present. Fast means to happen in a short amount of time. When you put them together, "The snow disappears fast" means that the snow is becoming invisible or disappearing in a short amount of time.

The snow melts down fast.

Meaning: This means that the snow is turning into water and flowing down very fast.

Choice of Words: Snow is the white stuff that falls from the sky in winter. Melts means to change from a solid to a liquid. Down means to move from a higher place to a lower place. Fast means to happen in a short amount of time. When you put them together, "The snow melts down fast" means that the snow is changing from a solid to a liquid and moving from a higher place to a lower place in a short amount of time.

Related Expressions