In English there exist many sentences which are affirmative in form but negative in meaning and negative in form but affirmative in meaning.

英语中有很多句子，它们寓否定意义于肯定形式及肯定意义于否定形式。

youdao

Though affirmative in form, sentences of indirect negation should be changed into negative ones in translation.

虽然间接否定句形式上是肯定的，但汉译时应转换成否定句。

youdao

The "who not" sentence develop from a counter-questioning format to the kind of no-question form expressing affirmative meaning, has a type meaning of similar to "who all", " who too".

“谁不”由一种反问格式渐而演变为一种以非疑问形式表达肯定意思的遍指句，跟“谁都”、“谁也”格式有了相同的句式意义。

youdao

He has perfected an aggressive new form of affirmative action relating to photo-opportunities: he is always surrounded by minorities, even when he is in the whitest of suburbs.

ECONOMIST: The timing of the shrub | The

Unless Google engages in some form of aggressive affirmative action (a concept that has lost favor, even among some liberals) in the distribution of Glass, what we will see on YouTube will be more from the point-of-view of the kinds of people we already know: celebrities, tech innovators, spoiled rich kids, etc.

FORBES: If You Have A Great Idea (And $1,500) You Can Be A Google Glass Explorer

Affirmative action, no less than any other form of discrimination, is a bad idea which for a brief time made some sense.

ECONOMIST: Affirmative action