Remember, don't use these in formal writing.

请记住不要在正式书面语中使用这些缩略形式。

But can we use them in formal context?

但是我们能在正式的语境中使用它们吗？

We still use it, but only in formal writing.

我们现在还在使用它，但只在正式的写作中使用。

Yes. This again is natural spoken English in formal English.

可以。这是正式英语中的自然口语。

But, avoid this use in formal writing.

但在正式写作中要避免这种用法。

You might notice that we use different words in formal, neutral and informal English.

你可能注意到我们在正式、中性和非正式英语中使用不同的词。

A barber by trade, Raymond was also lacking in formal education.

雷蒙德是一名理发师，也没有受过正规教育。

There are also some abbreviations which are possible in formal English.

在正式英语中也有一些缩写。

Even nowadays, in formal situations, it's okay to say SEC.

即使现在，在正式场合中，说 SEC 都是没问题的。

Food for thought can be used in formal and informal situations.

Food for thought可用于正式和非正式场合。

In some, fathers dressed in formal wear danced with their daughters.

在一些视频中，穿着正式服装的父亲和他们的女儿跳舞。

Only in formal writing when I'm trying to be formal.

只有在正式写作中，我想显得正式一点。

I held a formal membership in the football club in our college.

我是校足球俱乐部的一名正式成员。

Lots of people particularly in formal situations will say " I'm well" .

很多人，特别是在正式场合，会说 I'm well。

And as you said pledge, is often used in formal or very serious contexts.

正如你所言，pledge 通常用于正式或非常严肃的语境中。

It was the first time for the two teams to meet in formal competitions.

这是两支球队首次在正式比赛中相遇。

As for usage, both of these expressions can be used in formal and informal situations.

至于用法，这两种表达都可用于正式及非正式场合。

Next, let's look at a few phrases that are more common in formal situations.

接下来，让我们看一些在正式场合更常见的短语。

One reason is that some words are more common in formal or official settings than others.

原因之一是有些单词比其他单词在正式或者官方场合更加常用。

However, they are usually out of place in formal writing because of a number of drawbacks.

不过由于一些缺点，我们在正式写作中通常不会使用它们。