Appendix: spelling rules
Present simple -S
The present simple form of the verb is identical to the base form in all persons except the third person singular. The third person singular is formed by adding -s to the base form:
work
»
work
s
live
»
live
s
stay
»
stay
s
try
»
tr
ies
(a final -
y
changes to -
ie
- after a consonant)
wash
»
wash
es
; kiss
»
kiss
es
; watch
»
watch
es
; box
»
box
es
(we add -
es
after -
sh
, -
s
, -
ch
and -
x
)
go
»
go
es
(we add -
es
)
do
»
do
es
(we add -
es
)
have
»
has
Past simple -ED
In the case of regular verbs, the past simple is formed by adding -ed to the base form of the verb for all persons:
look
»
look
ed
stay
»
stay
ed
arrive
»
arrive
d
(we only add
-d
if the verb ends in
-e
)
try
»
tr
ied
(a final
-y
changes to -
i-
after a consonant)
stop
»
stop
ped
(we double the final consonant if the verb ends in consonant-vowel-consonant)
-ING (simple gerund and present participle)
The simple gerund and the present participle are formed by adding -ing to the base form of the verb:
read
»
read
ing
study
»
study
ing
grow
»
grow
ing
relax
»
relax
ing
answer
»
answer
ing
writ
e
»
writ
ing
; arg
ue
»
arg
uing
(a final
-e
is omitted)
agr
ee
»
agr
eeing
(a final
-ee
does not change)
l
ie
»
l
ying
(a final
-ie
changes to
-y-
)
pu
t
»
pu
tting
; regre
t
»
regre
tting
; readmi
t
»
readmi
tting
(we double the final consonant if the verb ends in consonant-vowel-consonant, with the exception of
w
,
x
and
y,
and only has one syllable or has the stress on the last syllable)