We also use adverb before  adjectives and other advervb.

                For example :  reasonably cheep (adverb+adjective)

                                        Terribly sorry (adverb+adjective)

                                         Incredibly quickly (adverb+adverb)

Good/Well

Good is an adjective.the adverb is well.

Your  English  is  good.

You speak English well.

Fast/hard/late

These words are both adjective and adverb:

Dara is a very fast runner.

Kate is a hard worker.

I was late.

منبع :

تکنولوژی زیستی از زیست شناسی چهارم تجربی
  برای شرکت در کلاس کلیک کنید( چهارم تجربی)
دبیر : سجاد عبیری