GRAMMAR
The past simple and the past participle of undo
Conjugation of the verb undo:
Base Form/Infinitive without 'to':
undo
Past Simple:
undid
Past Partciple:
undone
Present Partciple:
undoing
Third Person Singular:
undoes
Definition:
1. To to reverse the effects of an action that happened earlier.
2. To unfasten, loosen, untie.
3. To cause the ruin, downfall, or the impoverishment of.
Example(s):
1. One must find a way to undo the damage of holiday eating.
2. He loosened his tie and undid the buttons of his shirt.
3. He was a famous politician who was undone by scandals.
Similar verbs
The irregular verbs in the table below have the same pattern as undo. They are:
- Verbs that are different from all the other patterns.
- Verbs like 'be, was/were, been'.
Verb | Simple past | Past Participle |
---|---|---|
be | was/were | been |
do | did | done |
go | went | gone |
lie | lay | lain |
saw | sawed | sawed/sawn |
sew | sewed | sewed/sewn |
show | showed | shown |
sow | sowed | sown/sowed |
strew | strewed | strewed/strewn |
underlie | underlay | underlain |
undo | undid | undone |
unedrgo | underwent | undergone |