学生疑问:老师,这句话的主语在哪里啊?As soon as the instructor gives you the signal to start, dump out formulas, codes, outlines from your memory onto the test answer sheets so that you will not have to worry about whether your will remember the codes long enough until you get to the appropriate test question.
老师解答:这句话是一个主从复合句,从句是 “as soon as” 引导的时间状语从句,主句是一个祈使句,所以主语 “you” 省略了。