Question

—Does your sister work as a teacher in Canada? —No, but she once _________there for five ...

—Does your sister work as a teacher in Canada? —No, but she once _________there for five years． A．taught B．had taught C．has taught D．would teach

Answer 1

A

试题分析：had taught表示过去的过去，这里没有可以参照的过去的动作，故排除B；has taught现在完成与现在有关，故排除C；would teach过去将来时，过去说将要做的事，不符合语境，故排除C；taught过去式跟现在没有关系，是持续性动词，可与时间段连用，故选A。 点评：本题难度适中。动词时态是高考的热点。而语境中的时态具有灵活多变的特点，因此找出隐含于上下文中的时间信息，正确认定动作行为所发生的时间是解题的关键。 即学即练：－Have you read the novel? －Yes. I ____it three times while I was in university. A. had read   B. read    C. have read   D. was reading 解析：B。句意：考查动词时态。此处一般过去时仅表示在过去（大学期间）发生的事情（这篇小说读过三遍）。故选B。