remain的用法：
1、用作不及物动词：
They went, but I remained.
他们走了,但我留了下来。
He'll remain to accompany you.
他将留下来陪你。
A number of problems remain to be solved.
有很多问题尚待解决。
还有一项更艰苦的工作需要我们做。
2、用作系动词：
They remained good friends.
他们仍然是好朋友。
He will always remain a shining example for us all.
他永远是我们学习的光辉榜样。
His face remained expressionless.
他的脸上仍然毫无表情。
In spite of the danger they remained calm.
尽管有危险,但他们一直保持冷静。
We must always remain modest and prudent.
我们要经常保持谦虚谨慎。
He remained hanging in midair, saved by the belt.
他悬在空中,被安全带救了。
He remained unbending under the severest of tortures.
他受尽酷刑,仍然坚贞不屈。