5 - Lamp The light source in a flashlight. In most flashlights, the lamp is either a tungsten filament (incandescent bulb) or a light emitting diode (solid state bulb), also known as an LED. The tungsten filament or LED glows when electricity flows through it, thus producing visible light.
2. Infinitives are the to form of the verb. The infinitive form of learn is to learn.. You can also use an infinitive as the subject, the complement, or the object of a sentence. Examples: 1  To learn is important. 2  subject of sentence. 3  The most important thing is to learn. complement of sentence.
1 An infinitive is a verbal consisting of the word to plus a verb; it may be used as a noun, adjective, or adverb. 2  An infinitive phrase consists of an infinitive plus modifier(s), object(s), complement(s), and/or actor(s).unctuation: If the infinitive is used as an adverb and is the beginning phrase in a sentence, it should be set off with a comma; otherwise, no punctuation is needed for an infinitive phrase. 1  To buy a basket of flowers, John had to spend his last dollar.