Sentence improvement — Polite conditional request form: choose the most natural modal construction to refine ‘‘I shall be grateful to you if you are of help to me now.’’ so the register is courteous and idiomatic.

Given dataI shall be grateful to you if you are of help to me now.

Concept/ApproachIn polite requests, English favors ‘‘I would be grateful if you would help me (now).’’ The modal ‘‘would’’ signals courteous willingness/volition.

Step-by-step evaluationhelp — Bare infinitive after ‘‘if you’’ is ungrammatical here.would help — Correct: ‘‘I shall/would be grateful if you would help me now.’’helped — Simple past after ‘‘if’’ implies unreal/remote condition; clashes with ‘‘now’’.No improvement — Leaves the clumsy ‘‘are of help’’; less idiomatic.

Verification/AlternativeEqually natural: ‘‘I would be grateful if you could help me now.’’

Common pitfallsUsing ‘‘are of help’’ instead of the direct verb ‘‘help.’’ Overlooking courtesy modal ‘‘would/could’’ in requests.

Final Answerwould help