What is participle?

Participle is from of verb that is used as adjective in sentence to construct different form tense.

What is past participle?

Adding -ed to the end of verb forms part participle word.

Like walked, moved, passed, failed etc.

If particular verb is ends with e then only add –d to the end of verb.

Like Move as moved, like as liked etc.

Some of other verbs are having their own past participle forms.

Like eat as eaten, think as thought, take as taken, go/gone, feel/felt, do/done etc.