Use 'keep on' to emphasize the ongoing nature of an action or behavior.

Continuous Action

'Keep on' can imply mild frustration when someone continues doing something annoying.

Mild Frustration

Expresses determination in facing challenges when someone doesn't give up.

Highlights the continuous effort in an adverse situation.

Points to someone externally providing support to maintain an activity.

Use when someone is actively promoting positive behavior or actions.

Refers to a condition that doesn't change over time.

Used when a situation remains the same despite other changes.