I help out with the secretarial work. [VERB PREP. + with]

我帮着做些秘书工作。

All these presents came to more money than I had, and my mother had to help me out. [VERB noun PREP.]

我的钱不够买所有这些礼物，我母亲只好借了我一些钱。

He thought you'd been brought in from Toronto to help out the local police. [VERB PREP. noun]

他认为你是从多伦多调过来协助当地警方工作的。