Duality

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

Of the three branches of phonetics, the longest established, and until recently the most highly developed, is（）phonetics.

registers

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

A general difference between phonetics and phonology is that phonetics is focused on the production of speech sounds while phonology is more concerned with how speech sounds distinguish meaning.

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

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

All words may be said to contain a root morpheme.

The sentence “The baby smiled.” is a（）.