名词性从句在句子中起名词作用,包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是高考英语单选题的重要考点(编注:本文中所研讨的名词性从句不包括同位语从句,因为同位语从句并非高考语法的考查重点),容易与定语从句和强调句等混 Nominal clause plays the role of nouns in sentences, including subject clause, object clause, epigram clause and appositive clause. Nominal clause is an important test of college entrance examination of English single-choice questions (Editor’s note: the nominal clause discussed in this article does not include the appositive clause, because the appositive clause is not the focus of college entrance examination grammar), easy and attributive clause and emphasis sentence mix