Anonymous

not exactly. I majored in English - you are SO CLOSE! Here is the corrected sentence: This is promising to be a successful school year.

Anonymous

KLB is correct.

Anonymous

possibly, depending on the rest of the sentence that you might choose to add to it. It is not a sentence as written. You might also prefer the option of "this promising-to-be-successful school year" if you mean to use the phrase as an adjective. The idea of "this promising", in isolation, though, would be incorrect. promising is not, cannot be an object of this in that way. You could discuss an act of promising something as "this promising", but you cannot follow that with an infinitive, you would need a prepositional phrase: This promising of a successful school year" could be said, and means a particular promise (by some unstated person) of a successful school year, presumably for the speaker. That is, you could say "this promising" to refer to the promises put forth by some other person or persons.

Anonymous

No, it isn't grammatically correct. You didn't ask for the phrase to be corrected to show the grammatical correction so I won't tell you. When someone asks a question on Yahoo Answers, the question should state exactly and completely what one wants the person answering the question to to answer without any expectation the person answering the question will answer more than what was asked.

Anonymous

No. It requires "is" after "this" to be correct.