题目

Helen _____ a good job since she graduated from the university.A. doesn't findB. hasn't foundC. didn't findD. hadn't found

Helen _____ a good job since she graduated from the university.

A. doesn't find

B. hasn't found

C. didn't find

D. hadn't found

题目解答

答案

B. hasn't found

解析

本题考查现在完成时的用法。关键点在于since引导的时间状语从句，通常与现在完成时连用，表示从过去某一时间点开始一直持续到现在的动作或状态。解题时需注意主句的时态与从句时态的搭配关系。

时态分析

  1. since从句：since she graduated 中的graduated是过去式，表示一个过去的动作，此时主句应使用现在完成时，表示从过去持续到现在的结果。
  2. 选项排除：
    • A. doesn't find：一般现在时，无法与since搭配表示持续性。
    • C. didn't find：一般过去时，仅描述过去某个时间点，不符合持续性语境。
    • D. hadn't found：过去完成时，表示过去某个时间点之前完成的动作，与since矛盾。
    • B. hasn't found：现在完成时的否定形式，正确表达从过去持续到现在的未完成状态。