Meaning: Fish are able to move quickly through the water using their fins and body movements.
Choice of Words: Fish are aquatic animals that live in water. Swim means to move through water using fins or other body parts. Fast means moving quickly.
Alternative Expressions
Fish move through water quickly.
Meaning: This sentence also tells us that fish are able to move quickly through water, but it uses different words to describe the fish's movement and speed.
Choice of Words:Fish is a noun that refers to animals that live in water and use their fins to move. Move is a verb that describes the general motion of the fish. Quickly is an adverb that describes the speed of the fish's movement.
The fish are fast swimmers.
Meaning: This sentence tells us that the fish are good at swimming quickly.
Choice of Words:Fish is a noun that refers to animals that live in water and use their fins to move. Swimmers is a noun that describes fish that are able to swim. Fast is an adjective that describes the speed of the fish's swimming.