there are so many problems remaining to be settled.这里的remain是系动词还是不及物动词

问题描述:

there are so many problems remaining to be settled.这里的remain是系动词还是不及物动词
如果remain是系动词,

remain这里是系动词,remain to be done 是有待于去做,本句中使用remaining 现在分词短语做定语.
如: With many problems remaining to be done, he can't spare time for a holiday.
还可说: remain silent
remain standingremain seated
remain the best of friendsremainto been seen现在分词做定语,remain是系动词,那系动词怎么有现在分词形式呢系动词有现在分词比如: There are many flowers smelling sweet in the garden.系动词的非谓语动词形式只有现在分词,没有过去分词