Duplicate the last consonant

Hit - Hitting

Run - Running

​One syllable ends in consonant +vowel + consonant

Drop the "e" and add "ing"

Take - Taking

Cure - Curing

When it is double "e" don't drop it.

Agree - agreeing

Ends in "e"

To have in mind when the verb ends in...

Don't duplicate the last consonant

Happen - Happening

Listen - Listening

More than one syllable ends in consonant +vowel + consonant without stress in the last one.

If the stress is in the last syllabe duplicate the last consonant.

Begin - Beginning

Regret - Regretting

More than one syllable with consonant + vowel + consonant

To have in mind when the verb ends in...

Add "ing"

Walk - Walking

Play - Playing

Sing - Singing

Other terminations

Change the "y" for "ie" and add "ing"

Lie - Lying

Die - Dying

Ends in "ie"

To have in mind when the verb ends in...