Some common faulty and mechanical errors in English grammar with explanations:

1. Subject-verb agreement errors: This occurs when the subject and verb in a sentence do not agree in number. For example, “The dog barks loudly” is correct, but “The dogs barks loudly” is incorrect. In the latter sentence, “dogs” is plural, so the verb should be “bark” instead of “barks.”
2. Pronoun errors: This occurs when a pronoun does not agree in number or gender with the noun it is replacing. For example, “Everyone brought their own lunch” is incorrect because “everyone” is singular, so “their” should be replaced with “his or her.”
3. Comma splices: This occurs when two independent clauses are joined together with only a comma, which is incorrect. For example, “I went to the store, I bought some milk” is incorrect. You can fix it by either separating the two clauses into two sentences or adding a conjunction (such as “and” or “but”) after the comma.
4. Run-on sentences: This occurs when two or more independent clauses are connected without proper punctuation. For example, “I went to the store I bought some milk” is incorrect. You can fix it by separating the clauses into two sentences or adding a semicolon between the clauses.
5. Misplaced modifiers: This occurs when a modifier (such as an adjective or adverb) is placed too far from the word it is modifying, which can cause confusion. For example, “She only ate pizza with mushrooms” is incorrect because it implies that she only ate pizza with mushrooms and didn’t do anything else with it. A better way to phrase it would be “She ate only pizza with mushrooms.”
6. Dangling modifiers: This occurs when a modifier is used to describe something that is not present in the sentence. For example, “Walking down the street, the tree was beautiful” is incorrect because the tree is not the one walking down the street. A better way to phrase it would be “Walking down the street, I saw a beautiful tree.”
7. Double negatives: This occurs when two negative words are used in the same sentence, which can create confusion. For example, “I don’t have no money” is incorrect because the two negatives cancel each other out and create a positive. A better way to phrase it would be “I don’t have any money.”
8. Confusing words: This occurs when two words that sound similar are used incorrectly. For example, “I feel nauseous” is incorrect because “nauseous” means causing nausea, while “nauseated” means feeling sick. A better way to phrase it would be “I feel nauseated.”
9. Capitalization errors: This occurs when words are capitalized incorrectly. For example, “I went to the Mall to buy Clothes” is incorrect because only proper nouns and the first word of a sentence should be capitalized. A better way to phrase it would be “I went to the mall to buy clothes.”
10. Apostrophe errors: This occurs when apostrophes are used incorrectly, such as in plural nouns. For example, “The dog’s are barking” is incorrect because “dogs” is plural and does not need an apostrophe. A better way to phrase it would be “The dogs are barking.”

These are just a few examples of faulty and mechanical errors in English grammar. It’s important to proofread your writing carefully to catch and correct any errors before submitting or publishing it