
Unless
Conditional Permission
Understand 'unless' as setting a condition for permission, often used by parents or authorities.

You can't have dessert unless you eat your vegetables.
Implied Negative
'Unless' implies a negative scenario; it suggests that the action in the main clause isn't expected to happen.

He won't text you back unless you apologize.
Futurity Context
Use 'unless' to discuss future possibilities that depend on a condition not currently met.

They can't start construction unless the permits are approved.
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