i have so many things to shoulder这句话什么意思

i have so many things to shoulder这句话什么意思 I also have many other things to do,sorry这句话什么意思 so many things made me unhappy这句话什么意思 We have so many things for our picnic 什么意思 I have many things to I have so many things __. i want too many things to do tomorrow ,so i have to（）a sched Many things that we have to strive so I would like to refuel I have many things to do. things find I many.have.to 造句 I can't go.Because I have so many things--a,done b,to do c.t I have many things to do.请问to do在句子里做什么成分?