Hi It depends on whether a vowel or consonant comes before it, look at the following: regardless if it past simple/continuous or present simple/continuous ING = If the word ends in Y, and has a consonant before it, simply add ING. E.g ED = study > studied, marry > married ING = carry > carrying, reply > replying Vowel + Y ING = If the word ends in Y, and has a vowel before it, simply add ING. ING = enjoy > enjoying, stray > straying hope this helps:D

adding 'ing' to the verb indicates that the action is presently being done and we have to retain the letter "y" at the end of the word: buy _____ buyING annoy ____ annoying. stay _____ staying I'm not sure though how "y" changed to "i" to indicate past time actions. what I know is, changing verb ending in "y" to "i", and by adding "es", simply indicates 'simple present tense form': ex: carry ___ carryING ___ carrIES. by changing "y" to "i", and by adding "ed" would simply be the "simple past tense form" ex: carry ___ carryING ___ carrIES ____ carrIED :)