Quote:
Originally Posted by Belly T  Could anybody tell me what the other name of "V-ing form" is? 
By the way, could anyone give me when to double the last letter in V-ing form, like : Chatting (or chating?)
And in the past tense, when can we double the last letter?
ex:Prefferred  |
I only know of two -ing verbals: present participle (used in forming the continuous/progressive form of a verb or used as a modifier) and a gerund (a verbal noun).
In most cases, we double a terminal consonant after a vowel only when the stress is on that syllable and the vowel sound is short. (There are exceptions and there are consonants that never double).
chat = chatting and chatted (vowel is short and accent is on that syllable)
refer = referring and referred (same)
meter = metered and metering (accent is on the first syllable)