Used is the past participle; using is the present participle.
"Use" is a regular verb; therefore, its past participle is "used".
The past participle form of the word "use" is "used."
Used (e.g "It had been used for...", "John was used", etc.)
The past participle is used in a sentence to show completed actions, like "she has finished her homework." The present participle is used to show ongoing actions, like "he is running in the park." Both participles can also be used as adjectives, such as "the broken window" or "the sleeping cat."
drunk is the past participle of drink. drink drank drunk. I have drunk the medicine.
"Use" is a regular verb; therefore, its past participle is "used".
The past participle form of the word "use" is "used."
"ridden" is the past participle of "rode"
Used (e.g "It had been used for...", "John was used", etc.)
Depending on the use of it, it can be Present participle (I am skiing), or Gerund (Skiing is my favorite sport).
use of past participle with to be
The present participle is the -ing form of a verb.eg using walking talking listening
Said.
it is the simple past participle of 'have' as in - Have you had a good time
Yes.
All are past and past participle in tense.
The past participle is begun. For example: They had begun their homework when their mother got home.