動詞不定式做定語
1)主動關係
He was the last guest to arrive(=who arrived) 
He is not the man to draw back.
2) 動賓關係:
He has a large family to support(=that he must support)
This is the best book to read.
There is a quarter of an hour to kill.
3) 同位關係
The boy has an impulse to jump over the fense.
I have no wish to quarrel with you.