I’m Emma, and today we’ll look at how “unless” introduces an exception.

Here, “introduces an exception” means shows a condition that can stop something from happening.

I’m Emma, and today we’ll look at how “unless” introduces an exception.

“Unless” means something will happen except when a condition is true.

“Unless” means “except if,” or “if not.”

Here, “unless” means “except if” or “if not.”

For example, “We’ll eat outside unless it rains.”

The sentence means they will eat outside if it does not rain.

But don’t put “if” after “unless.”

The sentence warns that “if” should not follow “unless.”

Say “unless it rains,” not “unless if it rains.”

The correct phrase is “unless it rains”; “if” does not follow “unless.”

For a possible future situation, use a present verb after “unless,” even when the main sentence talks about the future.

This explains a grammar rule: use a present-tense verb after “unless” for a possible future event.

For example, “I’ll call you unless I get home late.”

The speaker will call if they do not arrive home late.

Say “unless I get,” not “unless I will get.”

Use the present form “get” after “unless,” not “will get.”

Don’t use “unless” when the condition is already known to be true.

The speaker says not to use “unless” when you already know the condition is true.

And for an impossible past condition, use “if,” not “unless”: “If the price hadn’t changed, we would have bought it.”

The speaker says to use “if” for a past situation that did not happen.

So, “unless” gives one clear exception: something will happen if that exception does not occur.

Here, “unless” marks one condition that would stop something from happening.