Adverbs of manner are often formed by adding -ly to adjectives: “careful – carefully.” They usually come after verbs (and objects) and after verbs of perception: “I plan my trips very carefully.”
Adverbs of place usually come after the verb: “Try to stay near the old part of the city.”
Adverbs of time can go at the beginning or end of a clause: “I had a memorable trip last year.”
Adverbs of frequency come before the verb but after be or auxiliary verbs: “I often travel for my job.”
Adverbs of intensity affect the strength of adjectives or adverbs: “fairly, quite, very, extremely, etc.”

Irregular Adverbs:

Some adverbs of manner look the same as the adjective form: “hard, fast, straight, late, early.”
Some adjectives can be followed by “to + infinitive” to add to their meaning (e.g., able, likely) or by a preposition + “-ing” (e.g., tired of, good at).