▪ (2) a. Jack looked up the word. b. Jack looked the word up.
▪ (3) *Cries fear the the of hunter blackbirds the. Conclusion: The structure of sentence such as word order can change the meaning. Every sentence is a sequence of words but not every sequence of words is a sentence. Sentence formation has rules, so that we have well/ill formed or (un)grammatical sentences.
▪ Adverbs are words that describe or add to the meaning of a verb, an adjective, another adverb, or a sentence, and which answers the questions introduced by how, where, when, etc. carefully, slowly, then, now
▪ Prepositions are words used with nouns in phrases providing information about time, place and other connections involving actions and things.
▪ Pronouns are words which may replace nouns or noun phrases.