VOA慢速英语:Betty Azar, 'Rock Star' of English Grammar

legend – n. a famous or important person who is known for doing something extremely well

TESOL – n. Teaching English to Speakers of Other Languages, the teaching of English as a second language

sofa – n. a long and comfortable piece of furniture on which a person can sit or lie down

carpet – n. a heavy fabric cover for a floor

old-fashioned – adj. no longer used or accepted : replaced by something more recent

deleterious – adj. damaging or harmful

component – n. one of the parts of something (such as a system or mixture) : an important piece of something

practitioner – n. a person actively engaged in an art, discipline, or profession

academic – adj. of or relating to schools and education 

academic – n. a person who is a teacher in a college or university

Learners can find many answers to grammar questions at the Azar Grammar Exchange.