What the element ‘-es’ indicates is third person singular, present tense, the element ‘-ed’ past tense, and ‘-ing’ progressive aspect. Since they are the smallest unit of language and meaningful, they are also（）.

As modern linguistics aims to describe and analyze the language people actually use, and not to lay down rules for "correct" linguistic behavior,it is said to be （）.

Only when a maxim under Cooperative Principle is blatantly violated and the hearer knows that it is being violated, do conversational implicatures arise.

The word “photographically” is made up of 5 morphemes.

protolanguage

acculturation

The compound word "bookstore" is the place where books are sold. This indicates that the meaning of a compound is the sum total of the meanings of its components.

“It is raining hard” is a one-place predication sentence.

A sentence is a （） concept, and the meaning of a sentence is often studied in isolation.

According to the ways antonyms differ, how many groups can we classify antonyms into?