A rule says: For 1-syllable adj.s/adv.s (and 2-syllable adj.s ending is y) 'er' is used and for the other adj.s 'more' is used before the adj.s.
I am confused if there is any rule facing some exceptions like: simple, slowly, etc
For one-syllable adjectives (and for two-syllable adjectives ending in y) 'er' is used to make their comparative adjectives, while for the other adjectives 'more' is used to.
easy (two-syllable adj. ending in y) >> easier
modern (two-syllable adj.) >> more modern
However there are some exceptions like simple and slowly (as an adv.) because their comparative forms are simpler and more slowly.
Thanks, is the rule correct for adverbs too?
Yes, the rule is true for adverbs as well.
To make comparatives:
1) Add -er to one-syllable adjectives: tall --> taller
2) Add more before the adjective if it has two syllables or more: exciting --> more exciting
3) Remove y add -er to two-syllable adjectives ending in -y: happy --> happier
4) Some comparative forms are irregular: good --> better, bad --> worse
5) And we have some exceptions that don't fall into these categories: simple --> simpler
Yes, of course. I know they're adjectives. I justed wanted to refer to the rules.
My first sentence in my previous post just gives answer to atabitaraf's question.
When we give a 'rule' it is normally helpful if the words/sentences we offer are examples of the rules being followed. As it happens, your rule #3 examples work for many adjectives, but few adverbs.