I could not be more proud
Not really. Bad American English has formed such a word. The correct way to say "prouder" in a sentence is "I have never been more proud ... "
NO. These are correct; I could have punched I have punched I had punched I had been punched I have been punching I had been punching
Either could be correct, depending on context. "The thief has been located in the library." (The thief is inside the walls of the library.) "The thief has been located at the library." (The thief could be anywhere on the library grounds.)
No, that is not correct. First of all 'much' is wrong with 'they'. It could have been "How many are they?. But if you have to ask the price of something you could ask- "How much is it for?" or "How much do they cost?" for more than a single item. In an informal way you might ask "How much for them?" or just "How much?"
"Has been" is correct, because "a block" is singular.
Not really. Bad American English has formed such a word. The correct way to say "prouder" in a sentence is "I have never been more proud ... "
"You could not have been" is grammatically correct. "You could not have been at the cinema last night, because I saw you in the park."
The correct sentence would be "He could not have been there". This is because 'can' is in the present tense and doesn't agree with the rest of the sentence.
NO. These are correct; I could have punched I have punched I had punched I had been punched I have been punching I had been punching
It depends on what you're trying to say. If you had the possibility of being a doctor, you could have been a doctor. If it was in your best interest to be a doctor, you should have been a doctor. Or if you're trying to distinguish between "could of" and "could have", it should be, you could have been a doctor.
That is correct. You could also say: Tom has been unemployed for a month.
You have been travelling is correct. You would never say you have been on travelling, although for poetic emphasis you could say you have been travelling on.
Been is the past tense of the verb to be: I have been to the library. The term "of been" is not a correct phrase in English. Unfortunately, many people use it instead of "have been". For example, "I could of been an athlete." is incorrect; "I could have been an athlete." is the correct term.
Both could be correct. One is a question - How long have you been playing tennis? One is a statement - You have been playing tennis.
Add a semicolon after 1800s. Also, the verb tense is wrong -- instead of "have been produced (present perfect), it should be have been produced.
"Have been" is the correct phrase to use. "Have being" is not grammatically correct.
It is correct to use "have" with the plural subject "you and your family". For a correct sentence, you could say, "I hope you and your family have a nice evening."