Conditionals

Both sentences have the same meaning.

The sentences have different meaning.

If not = Unless

None of the answers are right.

is used for gneral truths or for the result of a situation ot action.

is used to express a future possibility

Structure: If /When + Present simple, Present simple (If do, do)

Structure: If/When + Present simple, Future simple (If fo, will do)

an imaginary situation in the past.

an imaginary or impossible situation in the present.

a possible but unlikely present or future situation.

advice

If+present simple, present simple (if do, do)

If + past simple, would do

(if did, would do)

If + present simple, will do (If do, will do)

If + past perfect, would have done

(If had done, would have done)

imaginary situation in the present.

imaginary situation in the past.

regrets about the past.

past possibility

If+present simple, present simple (if do, do)

If + past simple, would do

(if did, would do)

If + present simple, will do (If do, will do)

If + past perfect, would have done

(If had done, would have done)