*The things I'm putting in parentheses is the phrase sentence
6. (as a volunteer) as is the prep. and volunteer is the obj. and (In the gift shop) in is the preposition and shop is the object.
7. (For the children) For is the prep. and children is obj. and (with serious illness) with is the prep. while illness is the obj.
8. (with flashing lights) with is the prep. and lights is the obj. and (Onto the scene) onto is the prep. and scene is the obj.
9. (about the causes) and (of diseases) and the sentence acts like a adjective
10. (before surgery) and the whole sentence acts like a adjective
11. (in wounds) the whole sentence is a adjective.
12. (for operations) the whole sentence acts like a adverb
13. (around us) and (in our bodies). the whole sentence acts like a Adjective
14. (of cells). The whole sentence is a adjective
15.(To the rescue). The whole sentence is a adjective
16.(in his). The whole sentence is adverb
(Sorry if this was long. But I hope I help!)