Any verb in base form in the dictionary is already in the present (the infinitive, which essentially implies infinite ways of making other verbs from the base form).
Therefore, the present tense of climb is climb.
The three forms in the present tense are simple present:
I climb out of bed each morning.
The emphatic present:
I do climb a lot of steps (more often used to make questions--Do you climb many steps to your apartment?)
The progressive present:
I am climbing, you are climbing, etc. "We are climbing Jacob's ladder."
from a retired English teacher
Third person present progressive is -- is + present participle. The present participle for climb is climbing.
She is climbing down now.
Climbs
He climbs
She climbs
It climbs
climb or climbs
He or she or it climbs.
Climbed.
Climbed.
Climbed.
The past participle of am is been. Not does not have a past participle
No, it is not. It is the past tense and past participle of the verb to climb, and might rarely be used as an adjective (e.g. climbed mountains as opposed to unclimbed).
The past participle of "do" is "done." The past participle of "have" is "had."
The past tense of "have" is "had," and the past participle is also "had."
The past and past participle for "buy" is "bought."
Being is the present participle. The past participle is been.
The past participle is thought.
Eating is the present participle; eaten is the past participle.
"Did" is the past and "done" is the past participle.
It might be, rarely, as in climbed mountains versus unclimbed mountains).But it is usually a verb. It is the past tense and past participle of the verb "to climb."
The past participle is had.