Answer:
1- The best plumber <u>to call</u> is Mr. Jones. (Adjectival)
2-Henry brought Jeri a ring <u>to show his love</u>. (adverbial)
3-Each year Merriweather tried <u>to find more deductions for his tax return</u>. (noun)
4- <u>To patch the hole</u>, the mechanic inserted a plug. (Adverbial)
5- She learned <u>to read and write English in Kenya</u>. (noun)
6- Eric’s desire <u>to do everything perfectly</u> will eventually frustrate him. (Adjective)
7- <u>To pay that much money for a television</u> is foolish. (noun)
8- Yesterday Smith exercised all day <u>to lose some weight before the wedding</u>. (adverbial)
9- His only ambition was <u>to succeed at his job</u>. (noun)
10- <u>To attempt</u> <u>an explanation for this phenomenon</u> would do little good. (noun)
Explanation:
An infinitive is a verb form that has complements and modifiers. It has the form "to+ verb" and can function as a noun, adjective, or adverb, depending on the structure and form of the sentence.
The infinitive or infinitive phrases of the given sentences and their functions are as follows-
1- The best plumber <u>to call</u> is Mr. Jones. (Adjectival)
2-Henry brought Jeri a ring <u>to show his love</u>. (adverbial)
3-Each year Merriweather tried <u>to find more deductions for his tax return</u>. (noun)
4- <u>To patch the hole</u>, the mechanic inserted a plug. (Adverbial)
5- She learned <u>to read and write English in Kenya</u>. (noun)
6- Eric’s desire <u>to do everything perfectly</u> will eventually frustrate him. (Adjective)
7- <u>To pay that much money for a television</u> is foolish. (noun)
8- Yesterday Smith exercised all day <u>to lose some weight before the wedding</u>. (adverbial)
9- His only ambition was <u>to succeed at his job</u>. (noun)
10- <u>To attempt an explanation for this phenomenon</u> would do little good. (noun)