In this sentence, the infinitive phrase functions as a noun and the subject. It is doing the action, to make. Infinitive phrases can function as nouns, adjectives, and adverbs. Here are examples of each. When an infinitive phrase acts as a noun, it can take the place of any noun in a sentence. That is, it can be the subject, but it can also be the object. Noun Subject Example: To eat ice cream for dessert would be wonderful. In this example, the infinitive phrase functions as subject doing the action of the sentence.
1 Trees Produce Oxygen. 2  Trees Clean the Soil. 3  Trees Control Noise Pollution. 4  Trees Slow Storm Water Runoff. 5  Trees Are Carbon Sinks. 6  Trees Clean the Air. 7  Trees Shade and Cool. 8  Trees Act as Windbreaks. 9  Trees Fight Soil Erosion. 10  Trees Increase Property Values.
Tree tobacco is a shrub that grows to be about 5 meters high. It was originally found in Argentina, but now grows worldwide. The leaves of tree tobacco contain a chemical called anabasine. This chemical makes tree tobacco leaves poisonous when taken by mouth. People apply tree tobacco to the skin for boils, fever, headache, pain, sore throat, and wounds. It has also been used as an insect repellant. How does it work? The leaves of tree tobacco contain a chemical called anabasine. Anabasine acts like a stimulant when taken at low doses and like a depressant when taken at high doses. This chemical also makes tree tobacco leaves poisonous when taken by mouth. But when tree tobacco is applied to the skin, it seems to help repel insects.