appear to=seem吗?

appear to=seem吗? remain to be seen为什么等于appear/seem to be feel like seem to 和 appear to 什么区别? 有这个句型么?S+(seem/appear)+to+(v/adj.) there is nobody on playground(seem appear happen used to改写） appear to 英语中类似appear to,seem to,tend to这些词是什么词性?后面为什么跟be或动词原型? look,seem 与appear 的区别 APPEAR 和 SEEM 有什么区别 appear,seem,look有什么区别? look,seem,appear有什么区别? seem to cannot 可以吗