remain to be 用法

剩下的要完成的（事）
这个不是词组也就是没有什么用法，用法的话只能说是remain的用法
remain
D.J.[riˈmein]
K.K.[rɪˈmen]
n.
剩余物; 残余
The remains of the meal were[was]fed to the dog.
剩饭喂狗了。
残骸; 遗体
His mortal remains are buried in the churchyard.
他的遗体埋葬在教堂的墓地里。
遗迹, 遗址, 废墟
Here is the remains of a temple.
这里是一所寺院的废墟。
vi.
留下, 逗留
They remained there all through the year.
他们在那里一直待到了年底。
I remained six days in London.
我在伦敦逗留了六天。
He'll remain to accompany you.
他将留下来陪你。
剩下, 余留
Though the sore being healed, yet a scar may remain.
伤口虽然痊愈, 却可能留下伤疤。
There remained in the village only women and children.
村子里只剩下妇女和儿童了。
留待
You can't let the room remain like this.
你不能把房间老是弄成这样。
That remains to be proved.
这尚待证实。
vi. & link v.
仍然是, 依旧是
The decision remains with the Government.
决定权在于*。
The fact remains that we are still lagging behind the other classes in maths.
事实是我们在数学方面仍然比别的班落后。
Peter has become a judge but John remains a fisherman.
彼得当了法官, 但约翰仍是个渔民。
He remained firm in the face of the enemy.
他在敌人面前始终很坚定。
When I got back home, he remained listening to the radio.
我回到家的时候, 他还在听收音机。
Let things remain as they have been in the past.
让事情照旧吧！
请采纳

这里的remain指某事“尚待、有待于以后被处置”,后面常接不定式的被动形式,表示主语是不定式的承受者.
Many problems remain to be solved.有好多问题尚待解决.
It remains to be seen if you are right.你是否正确,以后见分晓.