1.We think that that is which appears to be.
句子來源：http://www.youdao.com/example/which%20appears%20to%20be/#keyfrom=dict2.TOP
這句話中的從句which 已經做主語了，后面的be缺少賓語，如何理解？
我的想法：which appears to be整體作為一個 it 。
還是這句話本身就不對？
2.If I said,Whatdoyouthinkmost Christian religious people believe aboutwhathappens toyouafteryoure dead?
句子來源：http://www.youdao.com/example/mdia/video/what_do_you_think/#keyfrom=dict.main.sentence.mdia.video
意思我懂。但此句中 do you think 后面的從句中不缺任何成分，那樣what 代指什么?作為think的賓語嗎？不太理解。
好比這句（自己造的）：what do you think he is a nice man. （不了解這么寫行嗎？如若哪兒不對，怎么樣改正？用do you think 。）
3.Whatdoyouthinkare those that are likely to come up in this debate?
句子來源：http://www.npr.org/templates/story/story.php?storyId=4655615
此句去掉 “do you think”完全了解，有人說這是插入語，就如此。感覺心里不是滋味，不是非常理解，怎么樣細致地剖析？
我的理解：what做 do you think 賓語的同時，還做“are those ... ”的疑問代詞。
望各位老師不吝賜教，感激不盡。
1. We think that that is which appears to be.
本句正如網友所言：be之后缺少表語，假如添上一個比較級形容詞就能了，比如：better。
如此，which appears to be better 是表語從句，第一個that 引導賓語從句，第二個that是指示代詞，比如，指代疑問定義的the question, the problem 等。
我把句子補充完整后，是這個樣子：
We think that the question is which appears to be better.
【翻譯】大家覺得，問題是哪一種（方法）更好。
2. If I said,What do you think most Christian religious people believe about what happens to you after youre dead?
【翻譯】假如我說，“你覺得大部分基督教教徒對你死后發生的事有哪些怎么看？”
本句是一個條件句，缺少主句。
就這個條件句而言，沒錯誤。
do you think 是插入語，去掉后：
What do most Christian religious people believe about what happens to you after youre dead?
本句中，What 是believe的賓語，about后面的成分是一個名詞性從句含有空閑狀語從句。about表示“關于；對于”。
What do you believe about...? 句型：你對......有什么怎么看？
3. What do you think are those that are likely to come up in this debate?
【翻譯】你覺得在這次辯論中可能出現的問題是什么？
do you think 是插入語，去掉后：
What are those that are likely to come up in this debate?
that are likely to come up in this debate 是those 的定語從句。依據定語從句中come up 的意思，those 非常可能指代“問題”，然后用that 引導定語從句修飾它。