如果是动词,出现:V + adv. + prep.,中间这个副词小品词,后面那个是介词接宾语。例如: Happy memories crowded in on me as I looked at the photographs. 当我看到这些照片的时候,幸福的往事涌上我的心头。 来自《简明英汉词典》 I just wanted to check in on you. 我只是来看看你怎么样。 如果是名词后面,两个介词就是错误的了。网友这个句子,应该是笔误(是 is 不是 in),改为: Because the stress is on the /ei/ not the /n/" .