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:
1. Adverb of manner - Adverb of manner describes an event or how something happens.
i. Hulk jumped from the building angrily.
ii. Nobita does his homework regularly.
iii. It is raining heavily in Kochi.
iv. Scooby follows Shaggy loyally.
2. 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.
i. Shinchan always plays pranks.
ii. One must never bully others.
iii. I was badly in need of support after my poor performance.
iv. We should never move down from a moving bus.
v. The doctor examined Jake Burton immediately.  
3. Adverb of time: Adverb of times describes when an action took place and for how long.
i. I cut the cake exactly at midnight.
ii. He reached by 12 in the evening.
iii. I played ludo yesterday
Adverbs from the lesson "That Sunday Morning":
1. The cow bellowed loudly
2. He sat down on the road
3. I said that haughtily
4. I think we should move quickly
5. Some of them were running madly
6. Both of us moved fast enough
7. The cycle stopped abruptly
8. I could only cling on helplessly
9. On the first Sunday there, we decided to explore
10. After cycling for half an hour, my brother got bored
11. I pedalled as fast as I could
12. I gradually moved ahead