Conjunction: The main clause is a guide.

连词: 主要是引导从句.

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The sentence consists of a main clause and a subordinate clause.

这句中有一个主句和一个从句.

《简明英汉词典》

Clauses of contrast give information that surprises, or contrasts with the main clause.

对比状语从句用来表示超出主句表达的意义或与主句形成对比的信息.

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A conditional clause needs a main clause to make a complete sentence.

条件从句可置于主句前或主句后,与主句共同构成完整的句子.

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A purpose or reason clause needs a main clause to make a complete sentence.

目的状语从句和原因状语从句与主句一起构成完整的句子.

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A subordinate clause: A clause depends on the main clause in a sentence.

一个从句: 条目取决于主句在句子.

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