that和what用法历年来在高考题中所占比重较大,不仅仅在单选题中考查,在改错中也经常出现。学生看到这类题往往感到很迷茫,不知道该怎么选择。笔者根据十几年的高三教学经验,总结出它们的主要用法区别,在此分享给大家。一、引导名词性从句时的区别 That and what usage over the years in the college entrance examination questions in a larger proportion, not only in the single question test, the mistakes are also often appear. Students often feel confused to see these questions, do not know how to choose. The author based on more than ten years of teaching experience, summed up the main differences between their usage, to share with you. First, the difference between the guidance of nominal clause