再来巩固下主谓宾It's my business to look after your health1.这儿my business是形式主语,真正的主语是to look after your health因为主语是名词所以your health也要的 2.这儿用这个to是因为表示计划想好要做某事

再来巩固下主谓宾It's my business to look after your health1.这儿my business是形式主语,真正的主语是to look after your health因为主语是名词所以your health也要的 2.这儿用这个to是因为表示计划想好要做某事
再来巩固下主谓宾It's my business to look after your health
1.这儿my business是形式主语,真正的主语是to look after your health因为主语是名词所以your health也要的 2.这儿用这个to是因为表示计划想好要做某事而且是主动 3.如果是被动是不是to就不用了,如：to refer to…as,如果不是因为被动把to给省略掉了,那这儿的to refer to中的第一个to又为什么没有呢People who work in offices are frequently referred to as 'white collar workers' for the simple reason wear a collar and tie to go to work.4.我知道这儿主语是不定式,不定式能做同位语和补语么,这儿to是business的同位语和补语么

再来巩固下主谓宾It's my business to look after your health1.这儿my business是形式主语,真正的主语是to look after your health因为主语是名词所以your health也要的 2.这儿用这个to是因为表示计划想好要做某事
你的思路有问题啊!
只有it才能做形式主语啊,代词才能代替其他词啊,呵呵!