In the English language, adjectives have different forms to indicate comparisons. For most adjectives, the comparative form is made by adding '-er' to the end of the adjective, or for more complex or irregular adjectives, using 'more' in front of the adjective or changing the word entirely. Here are the comparative forms of the adjectives you provided:
Polite becomes more polite . Since 'polite' is a multi-syllable word, we use 'more' to form the comparative.
Cold becomes colder . This follows the simple rule by adding '-er'.
Fast becomes faster . It also follows the simple rule by adding '-er'.
Beautiful becomes more beautiful . 'Beautiful' is a multi-syllable word, so 'more' is used.
Tall becomes taller . This is a standard adjective that simply takes '-er'.
Hot becomes hotter . Here, we double the final consonant before adding '-er' due to its vowel-consonant ending.
Modern becomes more modern . For this two-syllable adjective not ending in 'y', 'more' is appropriate.
Good becomes better . This is an irregular adjective that completely changes form.
Cheap becomes cheaper . This follows the usual rule of adding '-er'.
Noisy becomes noisier . Since it ends with 'y', we change the 'y' to 'i' and add '-er'.
Bad becomes worse . Like 'good', it's an irregular adjective that changes entirely.
Expensive becomes more expensive . With three syllables, 'more' is used.
Understanding the comparative forms of adjectives helps in making comparisons between two entities by highlighting their differences or similarities in qualities.