题目内容
13．--Susan，do you know Maria？--Sure．We for nearly three years．（ ）
| A． | have made friends | B． | have been classmates | ||
| C． | have joined the club |
分析 Susan你认识Maria吗？当然了．我们成为同班同学已经将近三年了．
解答 答案：B．这道题考查的是"for+一段时间"和现在完成时态的延续性动词连用．A，C选项的动词都是短暂性动词，都应该排除．B选项的动词是延续性动词，现在完成时态表示：过去发生的动作对现在造成的影响或结果或表示过去的动作或状态持续到现在．主语+have/has+动词的过去分词．根据句意：我们成为同班同学已经将近三年了．（表示我当然认识她持续了将近三年．）应选：B．
点评 很多同学往往会忽略延续性动词和短暂性动词，这个在英语中分得很清，一定要特别注意．
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