萨利认为什么是她来访的主要原因?那为什么不用. Think of (认为）what is the main reason for her visit 是 think 的宾语从句think"认为” 接宾语从句时不用of 或者aboutthink of 一般接 名词，代词， 动名词think of想起, 记起; 想念考虑She thinks of no one but herself.她除了自己外不考虑任何人。When I said that, I was not thinking of her feelings.我说那话时, 没考虑到她的感情。He's thinking of studying abroad.他正在考虑出国学习。