oxford_guide_to_english_grammar

PAGE 387
300 List of irregular verbs
Base form Past tense Past/passive participle
NOTE
a For verbs which have forms both in ed and t, e.g. burned / burnt, dream / dreamt, • 303(11).
b Cost as a transitive verb is regular.
They've costed the project. (= estimated the cost)
c The third person singular of do is does
d Fit is usually regular in Britain but irregular in the US.
e In GB the past tense of forbid is forbad or forbade, pronounced . In the US it is
forbade, pronounced
f For the past participle gotten (US), • 303(5d).
g The third person singular of go is goes
For gone and been, • 84(6).
h We use hanged only to talk about hanging a person.
i The third person singular of have is has
j For the difference between lay and lie, • 11 (2) Note b. Lie (= tell an untruth) is regular.
k The third person singular of say is says
1 Shined means 'polished': I've shined my shoes. Compare The sun shone.
m We use sped for movement.
They sped down the hill.
But we say speeded up (= went faster),
n Weave is regular when it expresses movement.
We weaved our way through the traffic.