our minitor is always the first to enter the classroom.
PS: 可否扩展讲一下宾语的后置定语和补语之间的区别？感激不尽！！
补语
我们先说说什么叫做定语？用汉语来理解就是表示“……的”。比如说“一个漂亮的女孩”，“漂亮的”就是形容词作定语，用来修饰名词“女孩”。
一、介词短语
介词短语放在中心词后修饰和限定中心词，作后置定语。如：
a book on the desk/the map on the wall
二。 形容词修饰由some-, any-, no-, every- 构成的复合不定代词和复合否定代词时，必须放在它们后面。比如：something interesting，nothing much，anything valuable，anything else等。
else是比较特殊的形容词，只能跟在不定代词（副词）和疑问代词（副词）的后面。如：
I have something important to tell you.
Do you have anything else to say about it?
三、形容词作疑问词的后置定语
形容词修饰疑问代词what, which, who, whose, whom和疑问副词when, where, why, how的时候，要后置。如
What important would you like to talk about?
四、动词不定式作后置定语
动词不定式也是一种比较常见的后置定语的形式。在初中阶段，主要有这样一些常见的搭配还有某些名词后可用动词不定式作定语如：
have time to do sth, a way to do sth the first one to do sth;
She is always the first one to arrive at the school.
I don't have the courgae to tell you the truth.
五、分词短语作后置定语
1. 现在分词短语作后置定语。
现在分词用作后置定语通常表示这个分词的逻辑主语和它是一种主动的主谓关系，但由于句中已经有了谓语，所以在这种情况下只能用非谓语动词中的现在分词的形式来表示，如例句:
There is a dog lying on the ground.
The girl sitting by my side is my sister.
2. 过去分词短语作后置定语。
和现在分词不同的是，过去分词和它修饰的中心词是一种逻辑上的动宾关系，有的时候经常可以看作是定语从句的省略形式，如例句.
This is a film directed by FENGXIAOGANG.
What is the language spoken in Spain?
3. 还有一部分过去分词也可以作后置定语。例如：
Is there anybody injured?
The money left is not enough for so many people to live througt.
六、enough作后置定语
Enough作为形容词修饰名词时既可以在名词前，也可以在名词后。但enough作副词修饰形容词或副词的时候，必须放在后面作后置定语。
例如：good enough （足够好的），big enough（够大的），fast enough（够快），old enough（年龄足够大）。看下面例句：
We have not enough time （time enough） to do the job.
我们没有足够的时间做该工作。
His sister is old enough to go to school.
他的妹妹够上学的年龄了。
宾语补语
不定式（to do)
Father will not allow us to play on the street.
We believe him to be guilty.
名词
At the meeting we elected him monitor.
I think your brother a clever boy.
形容词
What you said made him angry.
I found the classroom empty.
副词
Please call the students back at once.
He was seen to take his cap off.
现在分词
We hear him singing in the hall.
过去分词
He saw his face reflected in the water.
I heard it spoken of in the next room.