Legend has it that the Dragon Boat Festival originated long, long ago.

传说龙舟节是很久很久以前开始的。

请问专家，这是什么句式？如何分析？it是形式宾语吗？

解答如下：

以上属于“形式宾语it”真正宾语为that从句,因为动词不能直接根宾语从句，必须先接it形式宾语，然后再接that从句

Rumor has it that the defence minister will soon resign. 

据传闻，国防部长不久就要辞职。

几种动词+形式宾语it+从句用法归纳如下

通常意义的形式宾语主要见于真正宾语为不定式、动名词、从句等且其后跟有宾语补足语时的情形，即用于“动词+it+宾语补足语+真正的宾语”这样的结构，但以下几类形式宾语却比较特殊，其后没有宾语补足语。

1.动词+ it + that-从句

I like it that you came. 

你来了，我很高兴。

I take it (that) he will come on time. 

我认为他会准时来的。

You can put it that it was arranged before. 

你可以说这是以前安排的。

Rumor has it that the defence minister will soon resign. 

据传闻，国防部长不久就要辞职。

【备注】能用于此结构的动词不多，常见的有 have, take, put, like 等。   

2.动词 + it + when (if)-从句

I dislike it when you whistle. 

我不爱听你吹口哨。

We really appreciate it when she offered to help. 

她来帮忙了，我们十分感激。

I’d prefer it if I didn’t have to do so much work. 

要是我不必做那么多工作，好就太好了。

【备注】能用于此结构的动词不多，常见的有 enjoy, hate, love, like, dislike, appreciate, prefer 等。

3.动词 + prep + it + that-从句

See to it that you’re not late again. 

注意千万不要再迟到。

Look to it that this doesn’t happen again. 

注意不要再发生这种事。

I can’t answer for it that he will come. 

我不能保证他会来。

You may rely on it that he’ll come to meet you. 

你放心，他会来接你的。

【备注】能用于此结构的动词不多，常见的有see to, look to, insist on, stick to, depend on, answer for 等。

4.动词 + it + 介词短语+ that-从句

I owe it to you that I am still alive. 

多亏有你我才仍然活着。

I took it for granted that he would help us. 

我认为他会帮助我们的。

【备注】能用于此结构的动词不多，常见的有take it for granted, bring it to sb’s attention, owe it to sb 等。

5.动词+it+V-ed that从句

I heard it said that that factory was found in 1995.

我听说是在1995年发现那家工厂。

They haven’t made it known where the meeting is to take place.

他们没有搞清楚会议什么开。

赞同刘老师的分析。

have it that是一个惯用表达，会用既可，通常不作成分分析。主语是事物时，have依据句首的名词译为“据说……；传说……；据报道……；谣传……”等等。又如：

Rumour has it that Jean is getting married again. 谣传简又要结婚了。

Word has it that the food costs an arm and a leg. 听说那里的食物贵得离谱。

Report has it that the ballet will visit England before long.  据报道，这个芭蕾舞团不久将访问英国。

Local folklore has it that prehistoric men drove cattle over these cliffs. 当地民间传说中称，史前人类把野牛从这些悬崖上驱赶下去。

▲have it that的主语也可以是人，此时的意义是“坚持说……，硬是说……”。例如：

They will have it that he is right.他硬说他是对的。

They will probably have it that our plan is impracticable.他可能会说我们的计划不切实际。