问题补充:
单选题Thesalesmanscoldedthegirlcaught_______andletheroff.A.to have stolenB.to be stealingC.to stealD.stealing
答案:
D解析本题考查的目标是看学生是否掌握catch sb. doing这一结构,caught在这里是过去分词做后置定语,相当于the girl who was caught stealing. 例:The farmer caught a man stealing his apples. 或A man was caught stealing apples. 那个农民发现一个人正在偷他的苹果。