•The
present progressive affix on verbs (-ing), denoting an activity in progres=
s -
for example, "He's drawing." (19-28 months)
<=
/span>
<=
span
style=3D'font-size:50%'>•The
preposition "on" - for example, "Put it on the table."
(27-30 months)
<=
span
style=3D'font-size:50%'>•The
preposition "in" - for example, "It's in the cupboard."
(27-30 months)
<=
span
style=3D'font-size:50%'>•The
plural /s/ - for example, "Dogs bark." (24-33 months)
<=
/span>
<=
span
style=3D'font-size:50%'>•The
irregular past tense of verbs - for example, "It broke", "He
ran away", "I made it." (25-46 months)
<=
span
style=3D'font-size:50%'>•The
possessive /s/ - for example, "Tom's book." (26-40 months)
=
•The
uncontractable copula "be" form (that is, where the "be&quo=
t;
form is used with an adjective, preposition or noun phrase and cannot be abbrev=
iated)
- for example, "He is." (In response to "Who's <=
/span>=
there?") (27-39 months)
=
<=
span
style=3D'font-size:50%'>•The
articles "a" and "the" (counted as separate morphemes.)
(28-46 months)
<=
span
style=3D'font-size:50%'>•Regular
past tense forms - for example, "Sally picked a flower." (26-48
months)
•The
third person singular /s/ for present tense verbs - for example, "John
rides the bike"; "He likes my =
dress." (26-46 months)
<=
/b>
•Irregular,
third-person singular present tense; the verbs "have" and
"do" become "has" and "does" for =
third-person sentence subjects - f=
or
example, "He has two eyes"; "Mummy does the shopping."
(28-50 m=
onths)
•The
uncontractable copula "be" form (that is, where the "be&quo=
t;
occurs with a main verb and cannot be abbreviated) - for example, "=
He
is." (In response to "Who's coming to the party?") (29-48
months)
•The
contractable copula form (that is, where "be" occurs with an
adjective, preposition or noun phrase and where abbreviation is possible=
) - for
example, "They're inside"; "The boy's dirty." (29-49
months)
•The
contractable auxiliary "be" form (that is, where "be"
occurs with a main verb and abbreviation is possible) - for example, "He's
laughing"; "Mummy's cooking dinner." (30-50 months)
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