"has/have + past participle" = present perfect tense "had + past participle" = past perfect tense Most past participles are regular and end in "-ed", the same as the past tense. "gone" and "done" are irregular past participles.
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Anonymous Why does -en or -ne is added after has/have/had for example 'has gone' , 'had done' and etc. Help me with this please.You can read all about irregular verbs in the link below. A list of irregular verbs is included at the end of the article.