English Grammer

這是出於have這個動詞，若have用作cause（要或安排（某人）做（某事）時），其句形是have+noun+infinitive，如：He had the bouncers throw them out of the club.（他叫保安人員把他們轟出了俱樂部）
所以，tutor改了你句子後，就變成：we were honoured to have Mr. Lee give us...
希望你明白！

2007-12-09 16:02:55 補充：
想補充，上面朋友說：we say we invite someone but not 'invite someone to' do something that's 'chinese English' !這說法並不對，Cambridge Dictionary Online就有以下例子：[ object to infinitive] Her family invited me to stay with them for a few weeks.

In a few minutes, we were honoured to yahoo dog. Lee to give us a short speech about our Hotel's background.

have someone 'verb' something is a kind of phrase . Although it is actually ' have sb to 'verb' something but 'to' is ignored .Like we say 'we see someone do something ' actually 'to' is in the sentence but it is ignored . One more example .A boy called John...actually 'who is' is between a boy and John but it is usually ignored .(Of course , in the case have/see someone 'verb' something , 'to' must be ignored )

2007-12-08 22:59:07 補充：
we say we invite someone but not 'invite someone to' do something that's 'chinese English' !