We in our middle school for about 3 years．( )A．studyB．studiedC．have studiedD．will study 题目和参考答案——青夏教育精英家教网——

题目内容

12．We ______in our middle school for about 3 years．（　　）

A．

study

B．

studied

C．

have studied

D．

will study

分析我们已经在这所中学学习三年了．

解答答案：C．结合时间状语for+一段时间，表示动作发生在过去，持续了一段时间，故用现在完成时have/has+过去分词，主语we复数，故have，study的过去式studied，故答案是C．

点评现在完成时的"未完成用法"指的是动作开始于过去某一时刻，一直延续到现在，或可能还要继续下去．例如：He has lived here since 1978．自从1978年以来，他一直住在这儿．（动作起始于1978年，一直住到现在，可能还要继续住下去．）I have been in the army for more than 5 years．我在部队已经呆了五年多了．（动作开始于5年前，一直延续至今，有可能还要继续下去．）此种用法的句中常需一个表示一段时间的状语（由since或for引导），或表示与现在时刻相连的时间状语（如：up to now，so far）等．例如：I have heard nothing from him up to now．到目前为止我没有他的任何消息．

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