first:
You can find definitions of the subsystems of language on pages 22 & 23 of the VCAA
English Language Study Design.
second:
Read your textbook, then, if you still don't understand, ask your teacher, and do some further reading.
third:
from the New Oxford American Dictionary:
anaphora |əˈnaf(ə)rə|
noun
1 Grammar the use of a word referring to or replacing a word used earlier in a sentence, to avoid repetition, such as do in I like it and so do they.
2 Rhetoric the repetition of a word or phrase at the beginning of successive clauses.
DERIVATIVES
anaphoric |anəˈfɒrɪk| adjective
ORIGIN late 16th cent.: senses 1 and 2 via Latin from Greek, ‘repetition,’ from ana- ‘back’ + pherein ‘to bear.’
'Anaphoric referencing' is under discourse because it is one of the features which works to tie sentences and utterances together within a text.
e.g. (from
Herald Sun/Galaxy Poll reveals airport rail link our top priority, retrieved 3rd March 2014)
Mr Morton said all options were ultimately hypothetical until the government committed to build one.
“We have to see the money on the table before we have any real debate on this
“It’s going to take more than one big project announcement to get things back on track; we’ve largely wasted the last three years not starting any projects,” he said.
'Mr Morton' is the
Noun Phrase subject of the verb 'said', and 'he' at the end is a pronoun referring
anaphorically back to 'Mr Morton'. In this way, the person referred to is linked across several sentences, which, in EngLang terms, would probably be called 'cohesion'.
'Acronym' is likely under the morphology subsystem because acronyms have to do with how a word is formed, the 'shape' of the word.
e.g. (from the same article)
The completion of the Metropolitan Ring Road was at the top of the RACV’s priority list.
The form of the word is made up from the initial letter of
Royal
Automobile
Club of
Victoria.
last:
Go and spend $10 on the 'Popular Penguin' paperback "How Language Works" by David Crystal (isbn 9780141037363), which
Dymocks, and most good bookshops should have. Then read it, use the index to look up topics as you meet them, use the bibliography for further reading etc etc.