Yes, "Have you been to the doctor?" is a fully formed sentence but it would be better to say
1) Have you been to see the doctor?
or
2) Have you been to the doctor's?
No, that sentence is not correct. That sentence should be: If you have been in love for 6 years.
It is a subject pronoun. We saw the doctor. - used in subject position = correct The doctor saw we. - used in object position = not correct
Being able is the correct version of the sentence. You can use it as a fragment of any sentence.
Yes, "How long have you been living in Oxford?" is a good sentence.
The use of the word in the sentence you quote is in the sense of having been perceived as being rude to an elder. So yes, the sentence is correct.
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.
"Where was Jack yesterday" is correct but the sentence needs to end with a question mark (?), not a period (.). He might have been seeing a doctor is the correct way to write the second sentence.
No - the sentence 'Had never been experience' is not a correct sentence.
The doctor has left the building. There is a sentence using the word "doctor" correctly.
No, that sentence is not correct. That sentence should be: If you have been in love for 6 years.
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.
It is a subject pronoun. We saw the doctor. - used in subject position = correct The doctor saw we. - used in object position = not correct
Being able is the correct version of the sentence. You can use it as a fragment of any sentence.
The correct sentence is: "Have you ever traveled before?"
A central fund for EGMM has been opened.
Yes, "How long have you been living in Oxford?" is a good sentence.
The use of the word in the sentence you quote is in the sense of having been perceived as being rude to an elder. So yes, the sentence is correct.