动词不定式分别在这些句子中充当什么成分?为什么?

To get on well with the classmates is important for me.
动词不定式作主语,谓语动词是is.
Who wants to have another try?
这里动词不定式作want的宾语.
Dad went to the hospital to see his friend?
动词不定式作目的状语.
祝你学习进步,更上一层楼!(*^__^*)