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.
An Infinitive Phrase consists of the infinitive to + a verb and any complements the infinitive has. The entire phrase can be used as a NOUN, an ADJECTIVE, or an ADVERB in a sentence. Treat Infinitive Phrases as you would Prepositional Phrases- extend them until you reach the object (noun) of the infinitive.