It is good to_help_others.(subject)

It is my ambition to_make_sure_that_the_disabled_people_in_our_neighbourhood_have_

access_to_all_public_buildings.(subject)

My ambition is_to_work_in the computer industry when I grow up.(predicative)

I don't have time to_sit_around feeling sorry for myself.(attributive)

I am the only student in my class to_have_a_pet_snake.(attributive)