问题标题：
指出下面句子所含的从句Thereisnodoubtthattheearthisbecomingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenor.thatther等所代表的从句
问题描述：
指出下面句子所含的从句
Thereisnodoubtthattheearthisbecomingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenor.
thatther等所代表的从句
陈文吾回答：
第一个that同位语从句(theearthisbecomingwarmer与doubt为同位语)
第二个that也是同位语从句(后面的句子同样也是doubt的同位语)
第三个that是强调句的标志(itis...that)将itis...that去掉后句子依旧完整.
前两个that所引导的同位语从句是并列平行关系.
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