柯林斯詞典subordinate clause (subordinate clauses) 1. N-COUNT A subordinate clause is a clause in a sentence which adds to or completes the information given in the main clause. It cannot usually stand alone as a sentence. Compare . 從句[技術(shù)] 返回 subordinate clause劍橋詞典in grammar , a clause that cannot form a sentence on its own but can be joined to a main clause to form a sentence 從句,從屬分句 返回 subordinate clause