VOA慢速英语:Noun Clauses in Everyday Speech

grammar – n. the set of rules that explain how words are used in a language

clause – n. grammar: a part of a sentence that has its own subject and verb

predicate – n. grammar: the part of a sentence that expresses what is said about the subject

complement – n. grammar: a word or group of words added to a sentence to make it complete

challenge – n. a difficult test or problem

complement – n. something that completes something else or makes it better

pattern – n. a repeated form or design

introduce – v. to use or make something available for the first time;

stylistic – adj. of or relating to a way of doing things

polite – adj. showing respect to others

formal – adj. of or related to serious of official speech