GUIDE ENGLISH GRAMMAR BOOK

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Irregular verb forms
299 Summary
A regular verb takes the endings s, ed and ing. For example, base form look,
s-form looks, past tense looked, ing-form looking and past/passive participle
looked. For more details, • 58.
List of irregular verbs • 300
Some verbs have ah irregular past tense and participle.
Base form:
Past tense:
Past participle:
Did you write the letter?
I wrote the letter yesterday.
I've written the letter.
We also use the irregular forms after a prefix such as re, un, out, mis.
I've rewritten the letter. He undid the knot.
Special participle forms • 301
Some special participle forms come before a noun.
a drunken riot
300 List of irregular verbs
Base form Past tense Past/passive participle