Brown's Morphemes

Question 1

Stage 1
Age:
MLU:
Morphological structure:

Answer 1

15-30 months
MLU: 1.75
Operations of Reference:
Nomination
Recurrence
Negation - denial	
Negation - rejection
Negation - non-existence
Semantic Relations:
Action + Agent	
Action + Object
Agent + Object	
Action + Locative
Entity + Locative
Possessor + Possession (object)	
Entity + Attributive	
Demonstrative + Entity
-Just after they have built up a 50 to 60 word vocabulary, children acquire the ability to produce the Stage I sentence types

Question 2

Stage 2
Age:
MLU:
Substages 1-4

Answer 2

28-36 Months
MLU: 2.25	 	 
1. Present progressive (-ing)	(it going)
2. in	(in box)
3. on (on box)
4. s-plurals (regular plurals) (my cars)

Question 3

Stage 3
Age:
MLU:
Substages 5-7

Answer 3

36 - 42 months
MLU: 2.75
5. Irregular past tense	(me fell down)
6. 's possessive (man's book)
7. Uncontractible copula (the full form of the verb to be when it is the only verb in a sentence)	
(Is it Alison?
Yes, 'it is'.
Was it Alison?
Yes, 'it was'.)

Question 4

Stage 4
Age:
MLU:
Substages 8-10

Answer 4

42-52 months
MLU: 3.5
8. Articles (A ball on the book).
9. Regular past tense (She jumped).
10. Third person regular, present tense (The puppy 'chews' it. Jason 'likes' you)

Question 5

Stage 5
Age:
MLU:
Substages 11-14

Answer 5

42-52
MLU: 4.0
11. Third person irregular (She does. He has.)
12. Uncontractible auxiliary (the full form of the verb 'to be' when it is an auxiliary verb in a sentence)	
('Are they' swimming?
'Were you' hungry?
I'm not laughing; 'she is'.
'She was' laughing; not me.)
13. Contractible copula (the shortened form of the verb 'to be' when it is the only verb in a sentence)	
('She's' ready.
'They're' here.
'Daddy's' got tomatoes.
My 'dog's' lost his collar.)
14. Contractible auxiliary (the shortened form of the verb 'to be' when it is an auxiliary verb in a sentence)	
('They're' coming.
'He's' going.
'I'm' opening it up.
'We're' hiding.
'It's' freezing.)