题目内容：

I look forward to seeing you.为什么see加ing

优质解答

是固定用法!
给你找了英语的解释!
Look forward to is one of the many phrasal verbs in English in which an adverbial particle (forward) as well as a preposition (to) is combined with the stem verb to signify a particular meaning.What we are looking forward to can be exemplified as either as a noun phrase or as a verb-phrase with an -ing pattern