Building word families with suffixes and choosing the right form. · about 14 minutes
Step 1 of 5
What is it? We build new words from a root by adding prefixes and suffixes. Suffixes often change the word class: decide (verb) -> decision (noun) -> decisive (adjective) -> decisively (adverb).
Why does it matter? Knowing word families makes vocabulary grow fast and helps you choose the right form in fill-in-the-blank and writing tasks.
Where do we use it? "The decision was decisive." "She acted decisively." "They simplified the rules."
In this lesson you will:
