In the present tense we use ‘can’ to talk about a general ability – e.g. I can swim – and also for ability at a particular moment – e.g. I can see you! The rules for t...
21、【答案】[A] practical ability 【解析】根据题干可知这是一道典型的例证题。根据题干关键词“a broken bike chain”定位到第二段第二句,向前找其论点句 “He is a teacher at a New Hampshire high school where learning is not something of books and tests a...
更多内容请点击：英语语法:Past ability & possibility 表示过去的能力&可能性