Question

____________,he forgot himself and shouted at the manager (fill in with a past participle phrase)

Answer 1

The correct sentence will be

"_Worked hard all the day_, he forgot himself and shouted at the manager". Past participles forms are found in participle phrases and they normally end with -d, -ed, -t, –n or -en.

All the phrases require more words, participle phrase will include the objects or/and modifiers which is complete the entire thought.

Answer 2

Frustrated and irritated, he forgot himself and shouted at the manager.

A past participial phrase includes a past participle and any modifiers. Past participial phrases function adjectivally to give more information about a noun or a pronoun in a sentence. after the noun or pronoun it describes.