Above: The Dual NDVI Ultra Probe Unit is powered by a Nano Logger (enhanced by an array of beryllium spheres) and is ready for field action. The TSL2561 is a common luminosity sensor. It measures how bright it is and reports in units that relate to the brightness that people perceive (lux).
An adjective describes (tells us more about) a noun or a pronoun. For example: student is a noun. But we can say more about the student in our sentence by using an adjective: intelligent student; clever student; lazy student; good student... etc. So, here is a sentence: The teacher says Marie is a good student.
An adjective describes how something 'is'. For this reason, we often use the verb 'to be' when using adjectives. Adjectives are used to describe nouns. Example: He is a good doctor. They Rule: Adjectives describe nouns. Here are two types of sentences we use with adjectives. Subject + To be + Adjective.Tom is shy. Alice is happy.Subject + Verb + Adjective + Noun. That is a big building! Peter has a fast car. The adjective is always invariable. Adjectives don't have a singular and plural form OR a masculine, femine and neuter form. 2  Adjectives are always the same! 3  Never add a final-s to an adjective. 4  Adjectives can also be placed at the end of a sentence if they describe the subject of a sentence. 5  Example: My doctor is excellent.