智课网TOEFL备考资料托福语法提分指导-从属连词及真题要点解析 1. 主句与从句之间必须有从属连词 全真例题分析 (1)The spiral threads of a spider*s web have a sticky substance on them - insects. (A) traps (B) trap its (C) which traps (D) which it traps (92.1) 答案 C 定语从句关系代词which引导从句,且在从句中作主语。 (2)Angiosperms inhabit relatively diverse environments and may be found - higher plants can surv