being exposed to the sunlight too long will do harm to one's skin.为什么开头不能用exposed 区别在哪
问题描述：
being exposed to the sunlight too long will do harm to one's skin.为什么开头不能用exposed 区别在哪
答
单独用exposed 表示被动语态，用being exposed 则表示现在进行时的被动语态。
答
这个问题问得很好!
解决此问题,需要划分句子成分：
【Being exposed to the sunlight too long主语】【 will do harm to谓语】【 one's skin.宾语】
句意：在阳光下暴露太久有害于皮肤.
Being exposed to the sunlight too long 是【v-ing形式短语】,可以做作主语,表语,定语,状语等.在此句中作主语.
而exposed 是【过去分词短语】,不能做主语,但可以做状语,定语或宾补.要用过去分词,句子可以改写为：
Exposed to the sunlight too long,one's skin will be harmed.=
If one's skin is exposed to the sunlight too long,it will be harmed.
建议：此类问题要彻底弄清,最好看看语法书上面【句子成分】这一部分,再加上【非谓语动词】部分.
祝你学习进步,时时开心!O(∩_∩)O~~