When I was studying for my CELPIP exam I got material from them. Unfortunately, I can not put the PDF to the public because it has a watermark with my personal email. But I can put you here what it says.
CELPIP's first error as they state:
A common CELPIP error is using the wrong grammatical form of a word—that is, mixing up nouns, verbs, adjectives, and adverbs. An example is using a noun form (such as beauty) when you need the adjective form (beautiful). (Canada is a beauty beautiful country.) As shown below, a word’s required grammatical form depends on its function in a sentence.
In addition, you can change the form or a word using the following rules:
From other nouns you can add these suffixes: -ese, -ess, -ette, -hood, -ism, -ist, -an, -ian, -ocrasy, -ology, -phobel, -phobia, -ship.
From verbs: -age -ee, -ance/-ancy, -ence/-ency, -al, -er/-or, -ment
From adjetives: -ance/-ancy, -ence/-ency, -ist, -ity, ness
From nouns: -ate, -ify, -ize
From adjetives: -en, -ify, -ize
From nouns: -al, -ese, -ian, -centric, -ed, -ful, -ic, -ical, -ish, -less, -like, -ly, -ous, -proof, -y
From verbs: -able, -ive for descritive adjetives, -ing, -ed, -(e)n for participal adjetives
From adjetives: -ish, -ward
From adjetives: -ly, -wardsblog comments powered by Disqus