This is a list of the most important irregular verbs in the English language which have been divided into CEFR levels and the irregular verbs in this B1 section have been put into 4 sets according to the frequency of the verb.

Below you will find three tests to test your knowledge.

The first column is the infinitive of the verb, the second column is the Simple Past Tense and the third column is the Past Participle.

InfinitiveSimple PastPast ParticipleMeaning
To swellswelledswollenhttps://en.wiktionary.org/wiki/swell
To bleedbledbledhttps://en.wiktionary.org/wiki/bleed
To sewsewedsownhttps://en.wiktionary.org/wiki/sew
To knitknit/knittedknit/knittedhttps://en.wiktionary.org/wiki/knit
To babysitbabysatbabysathttps://en.wiktionary.org/wiki/babysit
To breastfeedbreastfedbreastfedhttps://en.wiktionary.org/wiki/breastfeed
To divedove/diveddove/divedhttps://en.wiktionary.org/wiki/dive
To fitfit/fittedfit/fittedhttps://en.wiktionary.org/wiki/fit
To forecastforecastforecasthttps://en.wiktionary.org/wiki/forecast
To quitquitquithttps://en.wiktionary.org/wiki/quit

Essential B1 Irregular Verbs - Set Four

Test your irregular verbs

Essential B1 Irregular Verbs Set Four - Past Participle

Write the past participle forms of the irregular verb shown.
1.
swell -
2.
bleed -
3.
sew - or
4.
knit - or
5.
babysit -
6.
breastfeed -
7.
dive - or
8.
fit - or
9.
forecast -
10.
quit -

Essential B1 Irregular Verbs Set Four - Simple Past

Write the simple past forms of the irregular verb shown.
1.
swell -
2.
bleed -
3.
sew -
4.
knit - or
5.
babysit -
6.
breastfeed -
7.
dive - or
8.
fit - or
9.
forecast -
10.
quit -

Essential B1 Irregular Verbs Set Four - Infinitive

Write the infinitive forms of the irregular verb shown.
1.
swollen -
2.
bled -
3.
sown -
4.
knitted -
5.
babysat -
6.
breastfed -
7.
dove -
8.
fit -
9.
forecast -
10.
quit -

Lists are derived from an internet corpus assembled by the English Grammar Club with use of the university of Lancaster’s LancsBox 5.1.2 software.

Category: Irregular Verbs

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