The grammar terms (present perfect and past perfect) and the why don’t matter. All you need to know is that the verb form that works with “have” and its cousins is the past participle.

Okay, now we're going to tackle the dangling participle. A participle is the form of the verb that has ing on the end of it. And when you begin a sentence with a participle, that phrase has to ...

Stalking the elusive present participle Playing with English grammar is fun until you call a word a gerund when it isn’t.

Indeed, languages with three forms for present, past and participle have a way of trying to make two things out of three. Sometimes they marginalize the past form in favor of the participle.

Present participle (verb-ing) clauses can be used without a subject pronoun and an auxiliary when the subject of the sentence does two things at the same time or when one action interrupts another.

There are not very many adjectives formed from verb participles, Tutul, that can be used in both -ed and -ing forms. You can often get a sense of what works and what doesn't by transforming the ...