Definition : An adverb is to describe or to modify a verb. It is used to give some information to listeners or readers.
1. Mila walks.
2. Mila walks slowly.
In sentence 1, 'mila walks' describes that she can walk. This is a so general. Everybody knows about that.
In sentence 2, the general description is added by additional information about how she walks or how she does something. In this case, she walks slowly. On the other hand, we know now the way she walks.
The word /slowly/ is called "Adverb of Manner". This word modifies the verb /walks/ which is done by the doer/subject /mila/. We can say that /slowly/ or adverb of manner is additional information for the sentence 'mila walks'. Without the adverb, we will not know that mila walks like that!.
Generally, adverb of manner is the combination between /adjective/ and the suffix /ly/.
Note: In Indonesia language, /-ly/ is /Dengan/ or /dengan cara/.
Slow + ly ===> Slowly
quick + ly ===> Quickly
Beuatiful + ly ===> Beautifully
Easy + ly ===> Easily
Rapid + ly ===> Rapidly
Loud + ly ===> Loudly
Sweet + ly ===> Sweetly
Brief + ly ===> Briefly, etc
However, Not all the combination is correct. On the other hand, there are few words can stand as adverbs of manner without the suffix /-ly/, like /hard/, /well/, /Simple/, /bad/, /mad/, etc
/hard/ without /-ly/ ===> both adverb of manner and adjective
/well/ without /-ly/ ===> both adverb of manner and adjective
Study below carefully!
My father works hard (/hard/ is an adverb of manner)
The rock is hard. (/hard/ is an adjective)
She speaks English well (/well/ is an adverb of manner)
I am very well (/well/ is an adjective)
Notice that, when we put or place the suffix /-ly/ behind the adjective (/well/ or /hard/) the meaning will be different as well as the context.
/Badly/ means not only /Do something in a bad manner/ but also the same as 'very' or 'so'
I love you badly = I love you very much
I did it badly = I did it in a bad manner.
/badly/ is the same as /madly/.