Article »

principal parts

This Grammar.com article is about principal parts — enjoy your reading!

Main verbs have four principal parts: (1) infinitive (to decide), (2) past tense (decided), (3) past participle (decided), and (4) present participle (deciding). A regular verb forms its past tense and past participle the same way, usually by adding ‑ed. An irregular verb, however, uses different methods to form its past tense and past participle. Typically, irregular verbs change an internal vowel (I drink, I drank, I have drunk), or they add -en to form the past participle (I choose, I chose, I have chosen).

Have a discussion about this article with the community:

Citation

Use the citation below to add this article to your bibliography:

Style:MLAChicagoAPA

"principal parts." Grammar.com. STANDS4 LLC, 2017. Web. 24 Nov. 2017. <http://www.grammar.com/principal-parts>.

Free Writing Tool:

Instant
Grammar Checker

Improve your grammar, vocabulary, and writing -- and it's FREE!


Improve your writing now:

Download Grammar eBooks

It’s now more important than ever to develop a powerful writing style. After all, most communication takes place in reports, emails, and instant messages.