can't help to to是不是介词?为什么to后面是原型?

can't help to to是不是介词?为什么to后面是原型? 一个英语词组有点搞can't help to docan't help doingcan't help do can't help to doing 和couldn't help to doing一样吗 can't help to do和can't help doing的区别? can't help but do还是can't help but to do can’t help to do和 can’t help doing两个有什么区别? can't help but to do还是can't help but do? can't help do 和 can't help to do的区别 请问 can't help doing 和can't help to do有什么区别? can't help but 后面加to do 还是do? I can't do anything to help you 同义句 I can't help to miss you everyday! I can't help saying sorry to you ,becsuse I can't help(finish;to finish)the work.选哪个? He can do the work himself.He___.A.needn't help B.doesn't need to help C.needn't to help D.doesn't need any help He can do the work.He ________.A.needn't help B.doesn't need to help C.needn't to help D.doesn't need any help They can't find their ___ home.Would you please ___ them?A.to,help B.to,to help C./,to help D./,help can't help but to do有to吗?can't but do为什么就没有to? can't stand can't help doingcan't stand doing can't wait to do这三个总是记混