An adverb is a word used to modify a verb, an adjective, or another adverb.
Adverbs often end in -ly, but some (such as slow) look the same as their adjective counterparts.
1. Hulk is very strong.
2. The movie finished too quickly.
3. Unfortunately, Tony stark died.
Adverbs and Verbs:
Adverbs modify verbs. This means that they describe the way an action is happening.
1. Thor fights fiercely with Loki.
- How does Thor fight? Fiercely. 
2. I waited impatiently for the Endgame.
- How did I wait? Impatiently.
3. I will seriously consider your suggestion.
-  How will I consider your suggestion? Seriously.
Adverbs and Adjectives:
Adverbs modify adjectives. Adjectives describe a noun. For example in the sentence Ram is tall, The word tall describes Ram, the noun. But the adjective tall can be modified with adverbs like very, extremely etc.
1. Hermoine is very studious.
2. Hagrid is extremely tall.
3. Wonder woman was really awesome.
Adverbs modifying another Adverb:
Adverbs describe verbs. For example, in the sentence "He runs fast", the adverb fast describes the action run. But adverbs like very, so, extremely can modify the adverb fast.
1. Dhoni hit the stumps so quickly.
2. Ronaldo is running very fast.
There are different types of adjectives:
I. Adverb of manner - Adverb of manner describes an event or how something happens.
  1. Hulk jumped from the building angrily.
  2. Nobita does his homework regularly.
  3. It is raining heavily in Kochi.
  4. Scooby follows Shaggy loyally.
II. Adverb of frequency: Adverb of frequency describes how often an action occurs. The most commonly used adverb of frequency are, always, usually (or normally), often, sometimes, rarely, and never.  
  1. Shinchan always plays pranks.
  2. One must never bully others.
  3. I was badly in need of support after my poor performance.
  4. We should never move down from a moving bus.
  5. The doctor examined Jake Burton immediately.  
III. Adverb of time: Adverb of times describes when an action took place and for how long.
  1. I cut the cake exactly at midnight.
  2. He reached by 12 in the evening.
  3. I played ludo yesterday.
Sentences that contain adverbs from the lesson:
  1. Two years ago we were passing through the sugarcane fields near Mysore - Adverb of time
  2. Unfortunately for the poor beast, one of my companions did not feel that way about it - Adverb of manner
  3. He promptly shot the bear on the spot - Adverb of manner
  4. Within a very few days he started eating and drinking everything else - Adverb of time
  5. Bruno entered the library as he often did - Adverb of frequency
  6. He was clearly weakening rapidly - Adverb of manner
  7. Ten minutes later his breathing was less stertorous - Adverb of time
  8. He promptly drank the lot - Adverb of manner
  9. He vigorously tackled anyone who came forward for a rough and tumble - Adverb of manner
  10. He immediately produced and cradled affectionately a stump of wood which he had carefully concealed in his straw bed - Adverb of manner
  11. Hastily, and before she could change her mind, a letter was written to the curator of the zoo - Adverb of manner
  12. We all missed him greatly - Adverb of manner