(1) 在the first, the last, the only后面常跟不定式做定语,表示“第一个/最后一个/唯一一个做......的人”。(强限定加 to ,语法填空常考)
例如:The secretary is usually the first to come to the meeting and the last to leave.
(2) 表示抽象概念的名词后面接不定式做定语,对其进行解释说明:如ability, ambition, anxiety, attempt, campaign, chance, courage, decision, determination等。
例如:(注意名词和同根动词 用法一样 例如 determine to do 下定决心做某事,那么名词 dermination to do 单词动词变名词搭配的介词不变)
(3) 出现在there be 及have/has句型中,表示“有.....事情要做”。
判定不定式的主语:①Do you have anything to take to your son? 你有什么东西要(自己)带给你儿子吗?②Do you have anything to be taken to your son? 你有什么东西(让别人)带给你儿子吗?
(4) 名词+to do+介词或者副词,则须保留介词、副词:He is looking for a room to live in. Have a baby to take care of.