Yes. It cleverly suggests correct use and wrongful use.
It depends on how you use the phrase: Can you provide me a copy of your CV? - correct
Incorrect use.
That is the correct spelling of "phrase" (word group, or to use specific words).
Abuse of notation is the use of mathematical notation in a way which is not formally correct but seems likely to simplify the exposition or suggest the correct intuition.
"Have been" is the correct phrase to use. "Have being" is not grammatically correct.
After every use.
The correct phrase is "you had to leave." "Leave" is the correct verb form to use after "had to."
The detective positioned himself in the shadows of some bushes, from where the suspect was observable.
The correct phrase to use depends on the context of the sentence. "To be" is used as an infinitive verb phrase, while "to being" is not grammatically correct in standard English. For example, "I like to be alone" is correct, while "I like to being alone" is not.
Yes
No, the phrase "had went" is grammatically incorrect. The correct form is "had gone," using the past participle of "go" after the auxiliary verb "had."
"as a result" is the correct phrase to use. "As the result" is not grammatically correct.