【技能讲解】 1.若括号内提供的是动词，一般需要根据语境变成恰当的时态，如过去时、进行时、完成时；2.当主语和动词是被动关系时，还需要变成被动语态。
典例剖析
1.[2015·课标全国卷Ⅰ]It was raining lightly when I ________ (arrive) in Yangshuo just before dawn.
[答案] arrived 根据语境判断本空处时态应该和was一致，应填arrived。
2．[2015·广东高考]While making great efforts to run away, she ________ (fall) over the hill and died.
[答案] fell 根据上下文的时态推断用过去时fell。
