Location is the first thing customers consider when ______ to buy a house.A、plan

游客2023-10-04  27

问题 Location is the first thing customers consider when ______ to buy a house.

选项 A、planning
B、planned
C、to plan
D、having planned

答案 A

解析 本题考查状语从句中主语和系动词的省略。当when,until,after和if等引导的时间状语和条件状语从句中的主语与主句主语一致时,这时从句中的主语可以省略,从句中的动词用v+ing形式。例如:The students came into the classroom,when hearing the bell.(当听到铃声时,学生们走进教室。)题中从句完整形式为...customers consider when they are planning to buy a house...customers和they主语一致,因此A为正确答案。注意:状语从句中,如果从句的谓语动词所表示的动作,先于主句谓语动词所表示的动作,从句要用现在分词完成式,即having + v + ed形式。例如;Until having grown up,the boy understood his mother’s love.(长大了,这个男孩儿才懂得了妈妈的爱。)同理,从句中的动词与主语为被动关系的情况下,从句中的动词用过去分词形式v+ed。例如;If bitten by a snake,you should send for help and don’t walk.(如果你被蛇咬伤,你应该求救,不要走动。)从句完整形式为If you are bitten...。
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