Answer: If there are any tickets left for the concert, would you buy two for me and Tom ?
Explanation: The sentence "If there are any tickets left for the concert, would you buy two for me and Tom?" is an example of a conditional sentence. Conditional sentences are used to express that the action in the main clause (without if) can only take place if a certain condition (in the clause with if) is fulfilled.
In this case, the condition is "if there are any tickets left for the concert" and the main clause is "would you buy two for me and Tom?" The sentence is in the first conditional form, which is used to talk about real and possible situations. In first conditional sentences, the structure is usually "if + present simple, + will + infinitive" or "if + present simple, + modal verb (such as can, may, should) + infinitive."
In this sentence, "are" is the present simple form of the verb "to be" and "would" is a modal verb used to make a polite request. The subject "you" is implied before "would."