The standard reflexive pronoun form which corresponds to the plural forms they and them is themselves:

Themselves是對應于復數(shù)詞they和them的標準反身代詞：

I just showed the boys the refrigerator and told them to help themselves.

我只是讓這些男孩看了冰箱并告訴他們要依靠自己。

In current English, they and them are sometimes used in singular contexts, to refer to a person whose gender is unspecified . For example:

在現(xiàn)代英語中，they和them有時也用于指代單數(shù)語境，指一個人的性別未確認時。例如：

If your child is thinking about a gap year, they can get good advice from this website.
如果你的孩子正在考慮空檔年（高中畢業(yè)后與進大學前的一年），他（她）可以在這個網(wǎng)站獲得建議。

In recent years, people have started to use themself to correspond to this singular use of they and them: it’s seen as the logical singular form of themselves. For example:

近些年來，人們開始使用themself來表示they和them的單數(shù)形式：將其視為themselves邏輯上的單數(shù)形式。例如：

This is the first step in helping someone to help themself.
這是幫助他人自救的第一步。

This form is not yet accepted by everyone, though, and you should avoid using it in formal written contexts. If you were writing the sentence above, you should say:
然而這種形式目前還不能被所有人接受，在較為正式的寫作當中應該避免這種用法。如果你想使用上面這個句子的話，應該這樣寫：

This is the first step in helping someone to help themselves.
這是幫助他人自救的第一步。

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