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
Climbed.
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
The past participle of "do" is "done."
The past tense of "have" is "had," and the past participle is also "had."
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 the word "have" is "had."
The past participle of "am, are, is" is "been."
The past participle of "will" is "willed."
The past participle is thought.
The past participle of "to" is "been." The past participle of "be" is also "been."
Being is the present participle. The past participle is been.