As with many rhyming compounds, nitty-gritty is informal.

和许多押韵复合词一样，nitty-gritty是非正式用语。

In informal English, we can bend certain rules.

在非正式英语，我们管某些规则。

How do you mean, " informal guidelines" ?

什么叫“非正式指导”？

" Too" is the most informal but is often the best choice when speaking American English.

" Too" 是最正式的说法，但在说美式英语时经常是最好的选择。

How formal or informal is this expression?

这个表是正式的还是非正式的？

Their influence is both formal and informal.

他们正规和非正规的方式影响着办校问题。

Again, this is very slang and very informal.

同样提醒一下，这也是很口语和正式的说法。

British and American people are often quite informal.

英美两国的人常常穿得很休闲。

This expression can also be an informal invitation.

这个表也是一种非正式的邀请。

It was simply 'hey' - more informal than hello.

这儿用到了一个简单的字眼——hey，比hello更正式。

Remember, " ish" is kind of informal... or " informal-ish" .

记住，ish 是一种非正式的表，或者有点正式。

It's considered pretty informal to text message someone.

给别人发短信的确感觉很正式。

Would you like an informal dinner with us tonight?

你愿意今晚和我们一起吃顿便饭吗？

Twenty million others get by in the informal sector.

另有2000万人在非正规渠道勉强度日。

Yes, using " baby" in this way is slightly informal.

是的，这样使用" baby" 有点正式。

" Gig" is an informal way musicians talk about jobs.

Gig 是音乐人提及工作的一种非正式的方式。

It's an informal way to say good bye.

它还是一种非正式的告别表。

Unlike our other phrasal expressions, 'sort of' is informal.

与我们其他的短语表同，sort of 是非正式用语。

The next one is quite informal.

下一个是非常非正式的。

In a more informal email, you wouldn't use a phrase like this.

太正式的邮件中则用这类措词。