curious noun curiosity, expressing curiosity and curiosity.

1. Classification of parts of speech in English

The first category is content words, which are words that express real meanings, including: nouns, verbs, adjectives, quantifiers, and pronouns. The other type is function words, words that do not express actual meaning but express grammatical meaning, including: adverbs, prepositions, conjunctions, particles, interjections, (onomatopoeia).

2. Rules for changing verbs into nouns

For verbs ending with a silent e, add -r to the end of the word. Example: drive-driver, write-writer. For verbs that end in a stressed closed syllable and have only one consonant at the end, double the consonant at the end and add -er. Example: win—winner, begin—beginner.

The ending of V ance means "nature, condition, behavior, process, total amount, degree". If the verb ends in silent -e, add ance to -e, and if the verb ends in y, change y to i and add ance. Example: allow—allowance. Allow. perform-performance. performance. exist—existence. Existence. import—importance. Importance.

3. Rules for changing verbs into nouns

Generally, add -ing (present continuous tense) directly after the verb, for example: work - working, study-studying. Verb If it ends with a silent '-e, go to -e and add -ing. Example: take——taking, make——making. For verbs that emphasize closed syllables, double the final letter and add -ing. Example: cut——cutting. For verbs ending in -ie, change it to y and add -ing. Example: lie——lying, tie——tying, die——dying.