regular model: work
verbs ending in -e: like

work - model verb

Variants of the regular models:

  1. pass -s, -sh, -x, -o: +e
  2. try -y>ie
  3. omit -X>-XX
  4. die -ie: -ie>y
  5. agree -ee: +d

Irregular past tense models:

  1. cost invar.
  2. feed vowel: long>short
  3. find i>ou
  4. know [o,a]>e
  5. mean +t
  6. panic -k-
  7. pay -ay>aid
  8. send -d>-t
  9. sing i>a, u
  10. show >ed, -n
  11. stick a>u, i>u
  12. sleep -ee_>-e_t
  13. speak >o_e, o_en
  14. spell >ed, -t
  15. take -ake>-ook, -aken
  16. think >-ought
  17. wear -ear>-ore, -orn
  18. write -i_e>o_e, i_en

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doubt

It is conjugated like: work
infinitive:
present participle:
past participle:
(to) doubt
doubting
doubted
definition
in Spanish
in French
in Italian

Indicative

presentAlso known as:
present simple or simple present
Idoubt
youdoubt
he, she, itdoubts
wedoubt
youdoubt
theydoubt
simple pastAlso known as:
past simple or preterite
Idoubted
youdoubted
he, she, itdoubted
wedoubted
youdoubted
theydoubted
future
Iwill doubt
youwill doubt
he, she, itwill doubt
wewill doubt
youwill doubt
theywill doubt

Perfect tenses

present perfect
Ihave doubted
youhave doubted
he, she, ithas doubted
wehave doubted
youhave doubted
theyhave doubted
past perfectAlso known as:
pluperfect
Ihad doubted
youhad doubted
he, she, ithad doubted
wehad doubted
youhad doubted
theyhad doubted
future perfect
Iwill have doubted
youwill have doubted
he, she, itwill have doubted
wewill have doubted
youwill have doubted
theywill have doubted

Continuous (progressive) and emphatic tenses

present continuous
Iam doubting
youare doubting
he, she, itis doubting
weare doubting
youare doubting
theyare doubting
past continuous
Iwas doubting
youwere doubting
he, she, itwas doubting
wewere doubting
youwere doubting
theywere doubting
present emphatic
Ido doubt
youdo doubt
he, she, itdoes doubt
wedo doubt
youdo doubt
theydo doubt
past emphatic
Idid doubt
youdid doubt
he, she, itdid doubt
wedid doubt
youdid doubt
theydid doubt

Compound continuous (progressive) tenses

present perfect
Ihave been doubting
youhave been doubting
he, she, ithas been doubting
wehave been doubting
youhave been doubting
theyhave been doubting
past perfect
Ihad been doubting
youhad been doubting
he, she, ithad been doubting
wehad been doubting
youhad been doubting
theyhad been doubting
future
Iwill be doubting
youwill be doubting
he, she, itwill be doubting
wewill be doubting
youwill be doubting
theywill be doubting
future perfect
Iwill have been doubting
youwill have been doubting
he, she, itwill have been doubting
wewill have been doubting
youwill have been doubting
theywill have been doubting

Conditional

present
Iwould doubt
youwould doubt
he, she, itwould doubt
wewould doubt
youwould doubt
theywould doubt
perfectAlso known as:
past conditional
Iwould have doubted
youwould have doubted
he, she, itwould have doubted
wewould have doubted
youwould have doubted
theywould have doubted
present continuous
Iwould be doubting
youwould be doubting
he, she, itwould be doubting
wewould be doubting
youwould be doubting
theywould be doubting
perfect continuous
Iwould have been doubting
youwould have been doubting
he, she, itwould have been doubting
wewould have been doubting
youwould have been doubting
theywould have been doubting

Imperative

present
(you)doubt!
(we)let's doubt!
(you)doubt!

Subjunctive

present
Idoubt
youdoubt
he, she, itdoubt
wedoubt
youdoubt
theydoubt
past
Idoubted
youdoubted
he, she, itdoubted
wedoubted
youdoubted
theydoubted
future
Ishould doubt
youshould doubt
he, she, itshould doubt
weshould doubt
youshould doubt
theyshould doubt

*Blue letters in conjugations are irregular forms. (example)
*Red letters in conjugations are exceptions to the model. (example)

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