"when you can't concentrate" vs "when you can't concentrate on"

Question

"when you can't concentrate" vs "when you can't concentrate on"

Both phrases are correct, but they are used in different contexts. 'When you can't concentrate' is a complete phrase that can stand alone, while 'when you can't concentrate on' is followed by an object or activity that you are unable to focus on. The choice between the two depends on whether you want to emphasize the inability to concentrate in general or on a specific task.

Last Updated: April 01, 2024

This phrase is used to describe a situation where someone is unable to focus or pay attention to something.

Examples:

When you can't concentrate, it's hard to get any work done.
I find it difficult to read when I can't concentrate.

Alternatives:

when you're unable to concentrate
when you have trouble concentrating

This phrase is followed by the specific thing or task that you are having trouble concentrating on.

Examples:

When you can't concentrate on your studies, it's important to take a break.
I struggle when I can't concentrate on writing.

Alternatives:

when you can't focus on
when you can't pay attention to

Answer 1

when you can't concentrate

This phrase is correct and can be used when referring to a general inability to concentrate.

Answer 2

when you can't concentrate on

This phrase is correct and is used when specifying the object or activity that you are unable to focus on.