In the Use of English part, why is knowledge of word-formation important?

• A. To transform words into other parts of speech to fit the sentence.
• B. To memorize vocabulary lists
• C. To improve pronunciation
• D. To translate into native language

Answer: (A)

In the Use of English section, what matters is turning a base word into the correct form to fit the sentence’s grammatical needs. This means changing a word’s part of speech or using the appropriate derivative with the right suffix orPrefix so the sentence sounds natural and correct. Being able to form nouns from verbs, adjectives from nouns, or adverbs from adjectives, for example, lets you plug in a word that matches the required role in the sentence and preserves the meaning.

That’s why this option is best: it directly captures the skill the task is testing—manipulating word forms to align with grammar and context. While knowing vocabulary and pronunciation are useful in language study, they don’t specifically target the need to produce the correct word form to complete an item. Translating to a native language isn’t what these questions assess, since they focus on form and usage within English.