VOA慢速英语:Improve Your Writing with Contrast and Concession

contrast - n. a difference between people or things that are being compared

concession - n. grammar. a clause which begins with "although" or "even though" and which expresses an idea that suggests the opposite of the main part of the sentence.

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

semicolon – n.  the punctuation mark ; that is used to separate major parts in a sentence and to separate items in a series if the items contain commas

subordinate clause – n. grammar. a clause that does not form a simple sentence by itself and that is connected to the main clause of a sentence

gerund – n. grammar. an English noun formed from a verb by adding -ing