Our new English teacher, who is said to have moved back to china,Our teacher _____for 10 years before she came here. A.taught B.had taught C.has taught D.had been taught 答案选B 2. Our new English teacher, who is said to have moved back to

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Our new English teacher, who is said to have moved back to china,Our teacher _____for 10 years before she came here. A.taught B.had taught C.has taught D.had been taught 答案选B 2. Our new English teacher, who is said to have moved back to
Our new English teacher, who is said to have moved back to china,
Our teacher _____for 10 years before she came here.
A.taught B.had taught C.has taught D.had been taught 答案选B
2. Our new English teacher, who is said to have moved back to China, _______in America for almost 10 years.
A lived B. has lived C. was living D.had lived 答案选A
为何又不选C呢?

Our new English teacher, who is said to have moved back to china,Our teacher _____for 10 years before she came here. A.taught B.had taught C.has taught D.had been taught 答案选B 2. Our new English teacher, who is said to have moved back to
这两个题目考察时态.
当两个动作发生在过去,先发生的动作常用过去完成时,后发生的动作常用一般过去时,这也是处理一般过去时和过去完成时的一个基本原则.那么你的第一题中两个动词teach和come都发生在过去,而teach for 10 years动作发生在come here之前,故teach需要使用过去完成时.
第2题中的非限制性定语从句是个严重干扰项,做题时因为非限制性定语从句与主句关系不密切,我们可以放弃不考虑它.那么,我们发现这个句子里只剩下一个过去的动作live,只能用一般过去时.