Figure out
Find out
Check it out
Help me out
...
Why native people sometimes add the word "out" after a verb ???
Thanks all
These are phrasal verbs! A phrasal verb is a verb + an adverb or preposition. "Out" functions as an adverb. These phrases should be interpreted as a whole, rather than dissected into individual parts. They can be pretty tricky to learn. I think the best way to learn them is to listen for them, try to recognize them, and memorize what they mean.
Figure out: Understand/solve
Find out: Discover
Check it out: Look at this/it
Help me out: Help me
Here is a list of some more common phrasal verbs: https://www.gingersoftware.com/content/grammar-rules/verbs/list-of-phrasal-verbs/
Your grammar book should have a section called phrasal verbs. If you don't have a grammar book, I recommend Grammar in Use by Murphy. It has two-page units which include one page of explanation and one page of practice exercises. Some editions have answers in the back of the book. The book can be used for learning and for review.
google "what are phrasal verbs?"
https://learnenglish.britishcouncil.org/en/english-grammar/phrasal-verbs
They are phrasal verbs: To figure out means: To understand.
I couldn't figure out what she said.
To find out means to discover a fact.
His parents found out that he has a girlfriend.
