Some common errors in English are given below.
Incorrect: His health is more better.
Correct: His health is better. OR His health is much better.
Better is a comparative adjective. It cannot be modified by more. However, the modifier much is possible here.
Incorrect: Why you were late?
Correct: Why were you late?
Incorrect: Why you did not come?
Correct: Why didn’t you come?
In questions the auxiliary verb comes before the subject.
Incorrect: Let us discuss about this matter.
Correct: Let us discuss this matter.
The verb discuss does not take a preposition before the object.
Incorrect: He informed the death of his mother to me.
Correct: He informed me about the death of his mother.
We inform somebody about something.
Incorrect: No one told to me about this.
Correct: No one told me about this.
We tell someone about something.
Incorrect: He has worked in this office since ten years.
Correct: He has worked in this office for ten years.
Correct: He has worked in this office since 2004.
Incorrect: The patient felt very better after taking the tablet.
Correct: The patient felt better / much better after taking the tablet.
We cannot use very to modify comparative adjectives or adverbs.
Incorrect: The groom has ordered for a wedding suit.
Correct: The groom has ordered a wedding suit.
Correct: The groom has placed an order for a wedding suit.
Incorrect: The books I bought this year are costlier than last year.
Correct: The books I bought this year are costlier than those I bought last year.
You need to compare books with books. You cannot compare books with last year.
Incorrect: When she bought a diamond necklace she got a bangle freely.
Correct: When she bought a diamond necklace she got a bangle free.
Incorrect: You can speak free.
Correct: You can speak freely.
Free means ‘without payment’. Freely means ‘without limit or restriction’.