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The sentence "You should of known better" derives from "You should've known better"; "should of" sounds about like the way you say "should've".

Of course "should've" is a contraction of "should have" - consequently it is correct to say either "You should have known better" or (being a bit informal) "You should've known better" but it is incorrect to WRITE "You should of known better" instead of "You should've known better."

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Does this sentence use correct grammar You should of known better.?

NoThe sentence "You should of known better." derives from "You should've known better."; "should of" sounds about like "should've". Of course "should've" is a contraction for "should have" so the correct sentence is either "You should have known better." or (if speaking informally and using contractions) "You should've known better." Writing the sentence as "You should of known better." instead of "You should'veknown better." is INCORRECT.


Which has the best grammar I should not have eaten that candy or you should of known better?

The sentence "I should not have eaten that candy" has better grammar compared to "you should of known better." The correct form is "you should have known better," using the modal verb "have" followed by the past participle "known."


Is the following sentenc is correct He should have known better?

He should HAVE known better.


What is the past tense of shall and a sentence of it?

The past tense is should. e.g. I should have known better.


Is this the correct spelling of entrurm?

This word is not known in English, you should submit an explanation as to how it is used in a sentence


Is this correct He should of known better?

No, "should of" should be "should have". The confusion comes from the way the contraction "should've" is pronounced. It sounds like "should of", but it's not.


Is this sentence grammatically correct - He was known to have psoriasis?

Yes.


Tell you when to use know vs realize?

Compare these sentences using know / knows, knew and known: CORRECT: Present tense: I know the answer. I knew the answer. They know the answer. Past tense: He / She knows the answer. He / She knew the answer. They knew the answer. Known requires a helping verb, a form of 'be' in had or have. Correct: I had known the right answer. He / she had known the right answer. They should have known the answer. Though I should have easily known the answer, I did not know what I knew.


Is the sentence I believe I and my offices are well known gramatically correct?

I believe my offices and I are well known.


When was I Should Have Known Better created?

I Should Have Known Better was created on 1964-07-13.


It has been 5 years since you know him. Is this sentence grammatically correct?

No. "I have known him for 5 years." Would be more correct.


Which is correct 1He should have known better. 2Get a buck off of him.3He should never have come here.4He should never of come here.?

The answer is C.(3) He should never have come here.