The basic rule is that adjectives describe nouns (people, things and ideas).
a red car, a good plan, a silly idea
Example:
She spoke angrily. The men worked slowly.
We often make adverbs by adding -ly to an adjective (angry – angrily, slow – slowly).
However there are a few adjectives that end in -ly.
A silly idea, a friendly person, a lovely face, a lively discussion
But they are still adjectives, not adverbs.
Which words are correct in these sentences?
We took a train.
The train moved out of the station.
There are no questions, just answers.
The students entered the classroom and .
I thought he was , but he spoke and .