1.谓语动词 appreciate, dislike, hate, like, love, make等接由if或when 引导的宾语从句时往往在从句前加上形式宾语it. 

如:

I would appreciate it if you can help me to solve the technical problem.

要是你能帮我解决这个技术问题,我将非常感谢。

I would appreciate it if you could come to my birthday party. 如果你能来参加我的生日聚会,我将不胜感激。

I'd appreciate it if you wouldn't mention it.

如果你不提它,我会很感激。

I would appreciate it if you helped me.

要是你帮我的话,我就感激你了。

Mr Cameron knows British voters are quite Eurosceptic, but dislike it when his party obsesses about the subject.

Cameron先生知道英国选民相当怀疑欧洲,但是不想他的党困扰在这一主题之中。

He disliked it when she behaved badly in front of his mother.

他讨厌她在他母亲面前举止失当。

I hate it if you say such things in public.

我讨厌你在大庭广众之下说那样的事。

Women say they hate it if you're all protective.

如果你们都被保护起来,女人们会说,她们讨厌那样。

I won't like it if there are many food stalls by the streets.

如果,街边突然多了很多小食档,我可能也不会喜欢和习惯。

I don't think your parents would like it if they thought we weren't taking care of you.

如果你的父母知道我们没有好好照顾你,我想他们肯定会不开心的。

We're having a little party, and we'd love it if you paid us a visit.

我们有一个小聚会,如果您来捧场和我们一块小聚一下的话,我们会非常高兴的。

I love it when I hear you laugh.

我喜欢听你笑。

I love it when you say stuff like that.

你每次说这样的话时我都爱死你了。

Don't you love it when I make you a romantic meal?

你喜欢我为你做的浪漫餐么?

I love it when art imitates life.

我喜欢艺术来源于生活。

We should have confidence in ourselves, and believe we can make it if we try.

我们应该对自己有信心,并且坚信如果我们去尝试,就一定能成功。

She's made it obvious that she's appalled by me

她坦言被我吓着了。

2.动词hate, take, hide, punish, put等,后接由that 引导的宾语从句时,往往在从句前加形式宾语it. 

I hate it that I married so young.

我恨自己结婚太早。

She hid it that the key was in the drawer.

她把钥匙藏在抽屉里。

I take it that neither of you reads 'The Times'

我觉得你们俩都不读《泰晤士报》。

 I take it that you will be leaving Shanghai soon. 我认为你将马上离开上海。

 we punished it that we had finished the project ahead of time.

我们逼了自已一把以至于我们提前完成了项目。

You can put it that it was arranged before.

你可以说这是以前安排好的。

3.短语动词answer for, count on ,depend on, insist on, see to等后接有that引导的宾语从句时,必须冠以形式宾语it. 

I will answer for it that he will accomplish the task.

我保证他能完成这项任务。

I’m counting on it that you will come. 

我指望他会来。

 She’ll see to it that he goes ahead. 她将保证他会超前的。

We can depend on it that he will arrive here on time.

我们可以相信他会准时到这儿。

Can we depend on it that you are able to do it well?

我们能相信你有把握做好这件事吗?

They insisted on it that the motor should be repaired as soon as possible.

他们坚持电[发]动机应当尽快修理。

You will have to see to it that all the windows are shut when you leave.

当你离开时,你要确保所有的窗户都关好了。

I'll see to it that there is some action.

我保证会采取某种行动的。

注:作形式宾语时只能用it这个用法值得大家推敲几天哦。

特殊动词或动词短语引导宾语从句要加it做形式宾语解析