2.Parallel Structure
3.Parallel Comparison
In grammar, the comparative is the form of an adjective or adverb which denotes the degree or grade by which a person, thing, or other entity has a property oㅁr quality greater or less in extent than that of another, and is used in this context with a subordinating conjunction, such as than, as...as, etc.
( )+er
If word is one syllable, add suffix '-er'.
ex) fast -> faster, light -> lighter
If word is two syllable ended -y, -le, -er, and -ow, add suffix '-er'.
ex) lazy->lazier, simple->simpler,
clever->cleverer, narrow->narrower
more/less ( )
Other words must be preceded by 'more' or 'less'.
ex) more comfortable, less quickly
exceptional case
some words do not have formation rule.
ex) good – better – best, bad – worse - worst
Definition
Parallel structure means using the same pattern of words to show that two or more ideas have the same level of importance. This can happen at the word, phrase, or clause level. The usual way to join parallel structures is with the use of coordinating conjunctions such as "and" or "or."
Clauses
Professor Yu told the students that they should work on final draft, that they should start to write second essay, and that they should prepare for upcoming grammar presentation. (o)
Professor Yu told the students that they should work on final draft, start to write second essay, and prepare for upcoming grammar presentation. (o)
http://owl.english.purdue.edu/owl/resource/623/01/
Greater Essays, Keith Folse & Tison Pugh, 2007
English Grammar, George O. Curme, 1953

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