there is no doubt at all that is the right thing 是什么句型?1.主语从句 2.定语从句

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there is no doubt at all that is the right thing 是什么句型?1.主语从句 2.定语从句

含有“同位语从句”的复合句.主句:There is no doubt at all. 同位语从句:...that is the right thing = doubt ( saying "what the doubt is in detail")If we don't have "that-" , we won't kn...