now that she is out of a job,mary__back to school,but she hasn"t decided yet.(has been considering going)为什么不填had considered going?
问题描述：
now that she is out of a job,mary__back to school,but she hasn"t decided yet
.(has been considering going)为什么不填had considered going?
答
have been doing sth 是说过去现在都在做某事 而将来可能还要继续做此件事 结合句意 比较合适
答
前面用的是she is out of a job, 是现在时态, 后面不适合用过去完成时态
答
同一个句子要遵循时态一致的原则,即现在进行时要跟现在完成进行时或现在完成时或一般现在时,总之就是现在时才行~
同理,同一句子中用包含过去时时态的句子也要相对应用有关过去时态的动词~
回答完毕,