试题题干
Directions: Fill in the blank in each of the following statements with one word, the first letter of which is already given as a clue. Note that you are to fill in ONE word only, and you are not allowed to change the letter given.
Such words as "that", "if" and "until", which function as introductory words in most embedded clauses, are called s
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参考答案
试题解析
由两个或两个以上的子句构成，各个子句在句中的结构地位不同，其中之一为主要子句即主句，其余为从属子句。多数的从属子句需要连接词与主句连接起来，构成完整的句子。如“that”，“if”，“until”就被称为主从连词。