Part of speech is word in a language behave differently from each other. But not each word is entirely different from all other words in that language. 1. Nouns Usually has a determiner (except proper names like “John, Anna, etc) and can be modified by an adjective. Examples: I met Bill, the tree, the milk, a cat, several sheep, and etc. 2. Verbs - Verbs can combine with an auxiliary ( Aux + V ) Ex: will go, have seen, is swimming, and etc. - Verbs can be modified by an adverb ( Adv + V / V + Adv ) Ex: usually sleep, read carefully 3. Adjectives - Adjectives can modify by a noun ( Det + Adj + N ) Ex: a tall man, a cool day, a wonderful trip - Adjectives can be modified by an adverb ( Adv + Adj ) Ex: very smart, extremely clever, unusually hot 4...