It was a strange, mechanical sound, unlike anything he'd heard before.

Meaning: This sentence describes the noise as being unfamiliar and different from anything the person had heard before, suggesting it might be coming from a machine.

Choice of Words: Mechanical means relating to machines or machinery. Unlike means different from or not similar to. Heard means to perceive sound.

Alternative Expressions

It was a strange, mechanical sound, unlike anything he'd heard before.

Meaning: This means that there was a noise that was not like any other noise the boy had heard before. It was a weird noise that seemed to come from a machine.

Choice of Words: Strange means something unusual or not like other things. Mechanical means something that is made or works by machines. Sound is what you hear when something makes a noise. Unlike means not like or different from. Anything means any kind of thing. He'd is a short form of he had, which means something happened to him in the past. Before means in a time earlier than now.

The sound was bizarre and artificial, different from any he had ever encountered.

Meaning: This means that the noise was very strange and didn't sound like anything natural. It was like a noise made by a machine.

Choice of Words: Bizarre means something very strange or unusual. Artificial means something that is not natural or made by humans. Encountered means to meet or experience something.

It was an odd, machine-like noise, unlike anything he had previously experienced.

Meaning: This means that the noise was strange and sounded like a machine. It was not a noise that the boy had heard before.

Choice of Words: Odd means something strange or unusual. Machine-like means something that sounds or looks like a machine. Previously means before now.

Related Expressions