English used to have the singular form 'thou', which was often used in the intimate way like 'tu' or 'du'.

英文中之前有一个单数“thou”，是像“ tu ” “ du ”一样用于亲密的两人之间。

youdao

If so, it sets a new variable, called title, to files; otherwise, the title is set to the singular form file.

如果大于1，则会将一个新的title变量设置为files；否则，title将被设置为单数形式的file。

youdao

Some were minor differences (while we were already using the phrase "sizzle reels," we found that "sizzle reel," the singular form, generated 10 to 15 times more interest).

有些是细微的差别(尽管我们使用的是“sizzle reels ”这个短语，但我们发现，单数形式的“sizzle reel ”则能获得10到15倍以上的点击率)。

youdao

It would be great if the word (economic) cycle only existed in a singular form, and the only cycle we had in the economy was happy expansion.

FORBES: Chinese Quest For Shortcut To Greatness

Use a singular verb form after nobody, someone, everybody, neither, everyone, each and either.

FORBES: Magazine Article

And if it has not, the knowledge that both this group and one in Mexico are close to finding the genes which give the new form of maize its singular advantage should certainly do so.

ECONOMIST: Genetic engineering