大概分为四l种.1.连词that:只起连接作用,在从句中不作句子成分,也无词汇意义,在口语中或非正式文体中常被省略.例如:1)He knew(that)he should work hard. 2)I am glad(that)you've passed the exam. 2....
大概分为四l种.1.连词that:只起连接作用,在从句中不作句子成分,也无词汇意义,在口语中或非正式文体中常被省略.例如:1)He knew(that)he should work hard. 2)I am glad(that)you've passed the exam. 2....