The correct phrase is you are at the beach.
Both are correct depending on you are . If you are not inside the beach properly you are at the beach, and if you are inside it you are on the beach.
You are walking on an avenue and the beach is near to the avenue, you are at the beach. As soon as you leave the avenue and enter the beach, you are on the beach.
"On the beach" is a phrase, not an independent clause. It does not express a complete thought and cannot stand alone as a sentence.
Long Beach can be a set phrase if it refers specifically to the city in California. It can also be a descriptive phrase if it refers generally to a long stretch of beach.
It is not correct, you have to say on the beach.
The sentence, "They are going to the beach." is correct.
'In the hope that' is the correct phrase.
If you are referring to this sentence, no, it does not resemble a correct phrase AT ALL.
The correct form is 'so are you'. Example: I am going to the beach and so are you.A quick referencesingular:I am...You are...He is...She is...It is...plural:We are...You are...They are...
This is not a sentence it is a phrase and as a phrase it is correct.
Did they....?
That is the correct spelling of "phrase" (word group, or to use specific words).
The correct phrase is "sufficient proof".
It depends on how you use the phrase: Can you provide me a copy of your CV? - correct