It作形式賓語

It作形式賓語時，其后所接的從句可以是賓語從句，it只不過作為替代，也可以接同位語從句嗎？此時這兩種狀況應該如何區別呢

eg:①You have all heard It repeated that...此處的that是引導的同位語從句嗎？

②I take it that they will succeed sooner or later.此處的that呢？

1. You have all heard It repeated that...
it 是形式賓語，that 從句是真的賓語，也就是賓語從句。形式賓語和真的賓語，這個叫法就不是同位語了。有些語法書稱為同位語，是不適當的稱呼。如此的表達非常容易見到：
We thought it necessary that the two sides should sTOP arguing. 大家覺得，雙方停止爭論是必要的。
He considered it a good thing that the parliaments would be involved. 他覺得，議會將卷入其中是好事一樁。
Ann felt it an justice that she had been automatically blamed. 安感覺，她已自動同意職責是公正的。
They find it a mystery that he has never mentioned his parents. 他從來沒提到過我們的爸爸媽媽，他們發覺真是個謎團。
We consider it necessary that the machine should be oiled regularly. 大家覺得，有必要對這臺機器常常加油潤滑。
Under the circumstances I feel it right that you should know. 在這樣的情況下，我感覺你應該了解。
I found it strange that she had not come yet. 她居然沒來，我發現奇怪。
Mr. Black made it clear that the students should prepare every lesson. 布萊克先生明確指出，學生應籌備每一節課。
I think it important that we should keep calm. 我覺得大家維持冷靜是非常重要的。
I consider it best that you should stay here. 我覺得你最好住這兒。
They haven’t made it known where they are to hold the conference. 他們還沒有宣布會議在哪兒開。

2. I take it that they will succeed sooner or later.
take 是個多義詞，其中有一個意思是：“覺得”。但，這個詞不像 think 那樣，直接跟that從句，它一般只接名詞或代詞作賓語。不可直接說：I take they will succeed sooner or later. 這個時候，需要加一個形式賓語it，然后再跟 tha t從句。
I take it that you have been out.  我猜你剛出去回來。
I take it that you are leaving tomorrow. 我以為你明天走。
Can I take it that our policy has your support ?  能不承認為大家的政策得到你的支持?
May I take it that you will sign the document?  我相信你會在文件上簽字的吧?
Are we to take it that you refuse to co-operate?  大家能否覺得你拒絕合作？
Can I take it that we are all satisfied with the plan ? 我可以覺得大家對這個計劃都認可了嗎?
We take it that you will act according to the final agreement. 大家覺得你方是會根據最后協議行事的。
You may take it that we shall not be asking you to rejoin the union. 你可以覺得大家將不會需要你重新加入工會。
When I didn't hear from her, I took it that she was on holiday. 我沒收到她的信時，我以為她在度假。