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题目
题型:不详难度:来源:
It is ten months since he ______ a doctor.
A.becomesB.becameC.has becomeD.had become

答案
B
解析

试题分析:考查时态。本题是一个固定句式。Since自从…;后面的句子使用一般过去时,前面的主句使用现在完成时或者一般现在时;本题我们的it is可以换成it has been…;句意:自从他成为一名医生到现在已经10年了。说明他是10年前做医生的。故B正确。
点评:英语中的时态主要由动词的形式决定,因此在学习英语时态时,要注意分析动词形式及具体语境,想象在那个特定的时间动作所发生的背景,这个动作是经常性动作、一般性动作、进行性动作、完成性动作还是将要发生的动作。
核心考点
试题【It is ten months since he ______ a doctor. A.becomesB.becameC.has becomeD.had be】;主要考察你对一般现在时等知识点的理解。[详细]
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