refer to 中的to是介词么 ?如果接动词是不是要用动名词?

refer to中的“to”是介词吗?快速!马上要! refer to 中的to是介词么 ?如果接动词是不是要用动名词? 关于含介词to的英语短语的问题!英语中有些带有介词to的短语,如refer to,lead to等,请问,to在这里为什么是介词呢?应该怎样判断to在短语中的词性? in addition to 中的to是介词吗?如题 refer to refer to refer to refer to中,to的词性?不定式还是介词? .from...to中的to是介词吗 acusstomed to 中的to是介词吗? 有什么动词短语中的to是介词,如prefer to doing,请列举,越多越好 refer to 的含义 refer to 什么意思? 翻译：refer to refer to .as .是什么 refer to ,attampt是什么意思 refer to 的用法 What does 'a cold welcome 'refer to翻译下 refer to 是怎么理解?