第1个回答 2007-08-08
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本回答被提问者采纳
第2个回答 2007-08-08
sb look forward to doing sth是固定用法,动词用进行时,不用一般时.
第3个回答 2007-08-08
look forward to 中的to 是介词,所以要加动名词(doing).