2. be of some/ no/ much help to sb. 对某人有些 / 没有 / 很有帮助。
This book is of great help to me. 这本书对我很有帮助。
Is this magazine of any help to you ? 这本杂志对你有些帮助吗？
3. help oneself （ to ）自用（食物等）。
Help yourself to the fish. 请随便吃鱼。
Please help yourself to some pork. 请随便吃点肉。