National University of Singapore · FACULTY OF ARTS & HUMANITIES

ES5000 Chap.3 Word Forms and Word Functions

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Chapter 3 of 12 · ES5000

Word Forms and Word Functions

The first grammar topic, and why it comes first

Week 3 opens the grammar strand with words and word forms. The handout starts from a simple observation: whenever you write, you choose which word best expresses an idea, and three things decide the choice. The first is meaning. The second is form, such as effective or effectively. The third is function, the job the word does in its clause.

The handout adds that form and function, more than meaning, decide whether a sentence is grammatical.

Four forms and five functions

The handout works with four common forms: noun, verb, adjective and adverb. Its functions are subject, object, predicate, attributive and adverbial.

The connection between the two lists is fixed by three rules: only nouns, noun phrases or pronouns can be subjects and objects; only adjectives describe a subject or object; and adverbs describe only verbs, adjectives or other adverbs. Most word-form errors break one of these rules, as when an adjective is placed where the sentence needs a noun.

Suffixes as clues

The handout lists common suffixes by form.

Endings such as -ment, -ness, -tion and -ity mark nouns; -ate, -en, -ify and -ize mark verbs; many endings, including -ous, -ful, -ive and -able, mark adjectives; and -ly usually marks an adverb, although it also forms adjectives such as friendly.

Suffixes help you move between members of a family once you know which form you need.

From exercises to the quiz

The exercises climb in difficulty: label words by form, correct one wrong form per sentence, correct errors that are underlined in a paragraph, and finally find errors in a paragraph where nothing is marked. The first online grammar quiz follows the same logic under time pressure.

Its page states ten questions and a ten-minute limit, and each question underlines four items, one of which must be changed.

In this chapter

What this chapter covers

  • 01

    Meaning, form and function as the three choices behind a word

  • 02

    Nouns, verbs, adjectives and adverbs defined by what they do

  • 03

    Subject, object, predicate, attributive and adverbial functions

  • 04

    Three rules connecting forms to functions

  • 05

    Suffixes that signal each form, and their exceptions

  • 06

    Error identification under the quiz's time limit

Worked example · free

Correcting a paragraph with unmarked word-form errors

Q [8 marks]. Find and correct the word-form errors: The introduce of flexible hours had a noticeable effect. Staff worked more efficient, and absence fell significant. Managers reported that their satisfy with the scheme was high. The step weighting shown here is an AskSia study allocation and is not a University marking scheme.
  • 2Locate each word whose form does not fit its slot.
  • 3Name the slot and the form it requires.
  • 3Write the corrected paragraph.
There are four errors. Introduce follows the in the subject slot and must be the noun introduction. Efficient modifies the verb worked and must be the adverb efficiently. Significant modifies the verb fell and must be significantly. Satisfy follows their and must be the noun satisfaction. Corrected: The introduction of flexible hours had a noticeable effect. Staff worked more efficiently, and absence fell significantly. Managers reported that their satisfaction with the scheme was high.
Sia tip — After a possessive such as their or its, or after the, the next content word is almost always a noun. Check that one first.
Glossary

Key terms

Word Form
The grammatical category of a word, such as noun, verb, adjective or adverb, often signalled by its ending.
Word Function
The job a word does in its clause, such as subject, object, predicate, attributive or adverbial.
Suffix
An ending added to a word to change its form or meaning, such as -tion turning a verb into a noun.
Predicate
The verb part of a clause, showing the action or state of the subject.
Attributive
A word, usually an adjective, that describes a quality of the subject or the object.
Adverbial
A word or phrase that adds information about how, when, where or how often an action happens.
FAQ

Word Forms and Word Functions FAQ

What is the difference between word form and word function?

Form is what kind of word it is, such as a noun or an adverb. Function is what it does in a particular sentence, such as acting as the subject. The rules connect them: a subject must be a noun or pronoun, and a word describing a verb must be an adverb.

How can I tell an adverb from an adjective that ends in -ly?

Look at what the word describes. Friendly and lonely describe people or things, so they are adjectives. Quickly and legibly describe actions, so they are adverbs. The suffix is a clue, but the slot in the sentence decides.

How should I approach an error-identification question?

Work out what each underlined item is doing in the sentence before judging it. Most wrong options are a correct word in the wrong form, so ask whether each slot needs a noun, verb, adjective or adverb, and the item that fails that test is the answer.

Why do some nouns and verbs look identical?

English has pairs that share a spelling and differ only in stress, such as a record and to record. In writing they look the same, so the only way to tell them apart is the job the word does in the sentence.

Study strategy

Assessment move

Keep a list of every word-form error from your quizzes and drafts, with the slot it sat in. After three weeks you will see which slot you misjudge most, and that is the one to check first in every draft.

Working through Word Forms and Word Functions in ES5000? Sia is AskSia’s AI Arts and Humanities tutor — ask any ES5000 Word Forms and Word Functions question and get a clear, step-by-step explanation grounded in how ES5000 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.

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