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International English Language Testing System


interrogative adjectives

See interrogative determiners.

interrogative determiners

They are also called interrogative adjectives (e.g., whose, what, which). 

interrogative forms

Question forms are grammatical forms used for asking questions.  E.g.: The interrogative/question form for past simple is S+did+verb (infinitive): Did you make a pie?


Intonation is the rise and fall of the voice in speech.


See transitive.

intrinsic motivation

Learners with intrinsic motivation are motivated to learn a language (or other subject or skill)  because it is enjoyable. The learner is learning to use English for its own sake rather than because it will lead to an external reward.

Research suggests that learners with intrinsic motivation learn more effectively than those with only extrinsic (external) motivation. Teachers should try to make lessons interesting and fun in order to promote intrinsic motivation.

See also extrinsic motivation.

irregular adverbs

They are the adverbs of manner which are not formed by adding -ly to the adjective, e.g., hard, well, late and fast.

irregular plural

It is the plural form of a countable noun that is not formed by just adding -s, or -es to the singular noun, e.g., children, wolves and women.

irregular plurals

Plural nouns that do not take the normal form of an added -s or -es. E.g. children, women, sheep.

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