判断下面句中动词不定式的功能：

We are planning to build a factory here．

判断下面句中动词不定式的功能：

The country is known to be rich in natural resources．

判断下面句中动词不定式的功能：

He came here to borrow my bike．

判断下面句中动词不定式的功能：

To scold her would not be just．