Verbs in English use certain word endings, or the absence of endings, to indicate person, number and tense.
Most verbs in English follow one particular general pattern of endings. Any verb that follows this general pattern for forming the simple tenses and the present and past participles is a regular verb.
This is the pattern for regular verbs:
I walk | you want | you look | we kick | they melt |
he walks | she wants | he looks | he kicks | it melts |
she walked | he wanted | we looked | they kicked | it melted |
he is walking | we are wanting | you were looking | they were kicking | it was melting |
she has walked | he had wanted | we had looked | I have kicked | it has melted |
The Simple Present Tense
The form of a verb that is used for the first and second person singular and the first, second and third person plural of the simple present tense is the base form of the verb, the simplest form of the verb with nothing added on to it.
I talk | you talk | we talk | they talk |
I rest | you rest | we rest | they rest |
I blink | you blink | we blink | they blink |
I mend | you mend | we mend | they mend |
The ‘base form’ of a verb is the verb’s most basic form. It is, for example, the form in which a verb is listed in a dictionary. It is the form of the verb that has no extra endings added to it to indicate person, number or tense.
Verbs in the third person singular of the simple present tense end in -s. The -s is usually, but not always, added to the base form of the verb.
- talk — he talks
- blink — he blinks
- bump — he bumps
- save — she saves
- stay — it stays
- rest — she rests
- mend — it mends
- boast — she boasts
- like — he likes
- ski — he skis
The part of the word that an ending or inflection such as -s or -ing or -ed is added to is called the stem. The stem is usually just the base form of the verb, but in some cases slight changes have to be made to the spelling of the base form to make the stem to which the inflection is added, such as doubling final consonants or deleting final e’s.
If the base form of the verb ends in s, z, x, sh or ch, then the ending is -es rather than just -s:
- kiss — she kisses
- buzz — it buzzes
- box — he boxes
- wish — he wishes
- catch — it catches
- press — he presses
- fizz — it fizzes
- relax — she relaxes
- push — she pushes
- teach — she teaches
If the base form ends in a у which is preceded by a consonant, the у changes to i before the ending is added, and the ending is -es:
- cry — he cries
- try — she tries
But if the у is preceded by a vowel, the у does not change, and the ending is -s:
- buy — she buys
- stay — he stays
If the base form ends in o, the spelling rules are a little more complicated:
- If the base form ends in oo, just add -s: boo — he boos, coo — a pigeon coos, moo — a cow moos
- If there is any other vowel before the final o, add -s: video — He videos a lot of films, radio — He quickly radios headquarters for reinforcements.
- Almost all verbs whose base form ends in о following a consonant add -es in the third person singular: go — she goes, tango — she tangoes, echo — it echoes, veto — he vetoes
- Exceptions to rule are rare: disco — She discos every Saturday night.
The third person singular of the verb bus is either buses or busses. The third person singular of gas is gases and the third person singular of quiz is quizzes.
The Simple Past Tense
The simple past tense of a regular verb is generally formed by adding -ed to the stem.
- walk — I walked
- fetch — they fetched
- faint — he fainted
- sigh — she sighed
- ski — we skied
- melt — it melted
- look — we looked
- shampoo — she shampooed
- echo — it echoed
- taxi — it taxied
If the base form of the verb ends in e, just add -d to form the simple past tense:
- argue — argued
- die — died
- agree — agreed
- change — changed
- tie — tied
- free — freed
If the base form ends in у and the у is preceded by a consonant (not a vowel), the у changes to i before the ending -ed is added:
- cry — cried
- deny — denied
- stay — stayed
- supply — supplied
- try — tried
- journey — journeyed
Three verbs are slightly irregular: the simple past tenses of lay, pay and say are laid, paid and said.
If the base form is a word of one syllable which ends in a single vowel letter followed by a single consonant (e.g. drip, pin) or else is stressed on its last syllable and ends in a single vowel letter followed by a single consonant (e.g. pre’fer, re’mit, em’bed), the consonant is doubled before the -emending is added:
- clap — clapped
- stir — stirred
- slam — slammed
- spot — spotted
- grin — grinned
- drop — dropped
- refer — referred
- dim — dimmed
- admit — admitted
- scan — scanned
If the vowel Is not stressed, or if there is more than one vowel letter in the syllable, then the consonant is not doubled:
- gossip — gossiped
- offer — offered
- ransom — ransomed
- edit — edited
- pardon — pardoned
- stoop — stooped
- rear — reared
- steam — steamed
- greet — greeted
- clean — cleaned
In British English, a final I following a single vowel always doubles, regardless of the position of the stress:
- control — controlled
- repel — repelled
- equal — equalled
- signal — signalled
- rebel — rebelled
- travel — travelled
- dial — dialled
In American English, on the other hand, I obeys the general rule and is doubled only if the preceding single vowel is stressed:
- control — controlled
- repel — repelled
- equal — equaled
- signal — signaled
- rebel — rebelled
- travel — traveled
- dial — dialed
If the base form ends in a single vowel followed by c, the c becomes ck before the ending is added:
- panic — panicked
- picnic — picnicked
The verb arc is an exception: its past tense is arced.
A number of regular verbs have slightly irregular past tense forms in addition to regular ones, and there are differences in usage between British and American English. (Fuller information about some of these verbs is given in the Appendix):
- burn: burned OR burnt
- dream: dreamed OR dreamt
- dwell: dwelled OR (more commonly) dwelt
- kneel: kneeled OR knelt
- knit: knitted OR knit
- lean: leaned OR leant
- leap: leaped OR leapt
- learn: learned OR (Br. Eng.) learnt
- smell: smelled OR smelt
- spell: spelled OR spelt
- spill: spilled OR spilt
- spoil: spoiled OR spoilt
- sweat: sweated OR (Am. Eng.) sweat
The Present Participle
The present participles of regular verbs are usually formed by adding -ing to the base form.
- walk — walking
- watch — watching
- cry — crying
- break — breaking
- fill — filling
- say — saying
If the base form of the verb ends in e, the e is dropped before -ing is added:
- make — making
- bite — biting
- come — coming
- stare — staring
- shine — shining
- argue — arguing
But if the stem ends in oe or ее, the final e is not dropped before the ending:
- canoe — canoeing
- agree — agreeing
- hoe — hoeing
- free — freeing
And if the stem ends in ie, the ie becomes у before the -ing:
- tie — tying
- die — dying
- lie — lying
As with the simple past tense, a final consonant must sometimes be doubled before the ending is added. The rules for this are exactly the same as for the formation of the past tenses:
- tap — tapped, tapping
- grin — grinned, grinning
- swim — swimming
- sit — sitting
- stir — stirred, stirring
- admit — admitted, admitting
- run — running
- forget — forgetting
Where the final consonant is not doubled in the past tense, it is not doubled in the present participle either:
- offer — offered, offering
- stoop — stooped, stooping
- travel — (Br. Eng.) travelled, travelling
- travel — (Am. Eng.) traveled, traveling
- gossip — gossiped, gossiping
- clean — cleaned, cleaning
Note also:
- panic — panicked, panicking
- mimic — mimicked, mimicking
but on the other hand, the exception:
- arc — arced, arcing
Note the following verbs that do not, or may not, drop the final e before adding -ing:
- age — ageing OR aging
- binge — bingeing OR (Am. Eng.) binging
- eye — eyeing OR (much less commonly) eying
- singe — singeing
- whinge — whingeing
Note also the adjective swingeing, which is derived from an old verb swinge, meaning ‘to hit hard’.
The Past Participle
The past participles of regular verbs are always the same as the simple past tense forms.
- she walked — she has walked
- they argued — they have argued
- we panicked — we had panicked
- he died — he had died
- she stayed — she had stayed
There are a few verbs that have both regular past participles and also past participles that are not regular. There is some variation in usage between British and American English.
Base Form | Past Tense | Past Participle |
mow | mowed | mowed or mown |
prove | proved | proved or proven |
saw | sawed | sawed (American English) sawn (British English) |
sew | sewed | sewed or sewn (more commonly) |
shear | sheared | sheared or shorn |
show | showed | shown (more commonly) showed |
sow | sowed | sowed sown (more commonly) |
swell | swelled | swelled or swollen |
thrive | thrived or (less commonly) throve | thrived or (much less commonly) thriven |