作业帮高中英语2929._________________ plenty of fresh air __________ good health.A.Having exposed to ; contributes to B.Having been exposed to ; contributed to C.Being exposed to ; contributes to D.Exposed to ; contributes to 为什么答案是C ,不是
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高中英语2929._________________ plenty of fresh air __________ good health.A.Having exposed to ; contributes to B.Having been exposed to ; contributed to C.Being exposed to ; contributes to D.Exposed to ; contributes to 为什么答案是C ,不是
高中英语29
29._________________ plenty of fresh air __________ good health.A.Having exposed to ; contributes to B.Having been exposed to ; contributed to C.Being exposed to ; contributes to D.Exposed to ; contributes to 为什么答案是C ,不是D?C和D 的区别
高中英语2929._________________ plenty of fresh air __________ good health.A.Having exposed to ; contributes to B.Having been exposed to ; contributed to C.Being exposed to ; contributes to D.Exposed to ; contributes to 为什么答案是C ,不是
d是过去分词
这里缺少主语
现在分词才可以做主语,而且又是被动,所以是being done的结构
C. Being exposed to ; contributes to
动名词的被动式作主语
有谓语contributes.那就是动名词做主语。
因为划线处的动词短语要做主语，因此只能用动名词形式。
expose...to
使...受到, 使...朝向...; 使...接触...
这句话的意思是是身被暴露在新鲜空气里对身体有好处。从意思可以感觉这是被动语态，因此要用Being exposed to
答案C中Being exposed to plenty of fresh air作主语，其实这儿是词组Be exposed to 的ing形式，因为作主语要用动词或动词词组的ing 形式，而D答案中Exposed to plenty of fresh air只能在句中充当状语（V-ed形式作状语），如Exposed to the sunshine for a long time, he got ...
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答案C中Being exposed to plenty of fresh air作主语，其实这儿是词组Be exposed to 的ing形式，因为作主语要用动词或动词词组的ing 形式，而D答案中Exposed to plenty of fresh air只能在句中充当状语（V-ed形式作状语），如Exposed to the sunshine for a long time, he got burnt.(暴露在阳光下时间太长了，他被晒伤了。)
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