。?If you have time, I'll ask you some questions. ?如果你有时间,我将问你几个问题。?3.if/ when同时引导宾语从句和状语从句。如:?I don't know if he e. If es, I will tell him the truth.?我不知道他是否要来。如果他来,我将告诉他事实。Р专题十三复合句РI don't know when he e tomorrow. When es,I will tell him the truth. ?我不知道他明天什么时候来。当他来时,我将告诉他事实。?4.because与so, although/though与but不能同时用在一个主从复合句中。如:?Though/Although they were very tired, they kept working. ?尽管他们很累,但仍然继续工作。Р专题十三复合句Р┃定语从句┃Р1.关于定语从句的概念?(1)定语从句就是在复合句里充当定语的从句,它通常紧靠在所修饰的名词或代词后面。?(2)先行词就是被定语从句修饰的名词或代词。?(3)关系词:引导定语从句的词叫关系词。?2.引导定语从句的关系词: 关系代词有who(whose, whom), which, that; 关系副词有when, where, why。?3.关系代词的基本用法Р专题十三复合句Р4.关系副词的基本用法?关系副词在定语从句中作状语,分别表示时间、地点和原因。如:This is the place where we spent our holidays last year.这就是我们去年度假的地方。?I'll never forget the day when I graduated from college.我将永远忘不了我大学毕业的那一天。Р专题十三复合句