The adverb 何尝 "isn’t"
The adverb 何尝 
is used to make a rhetorical question.
is used to make a rhetorical question. Pay attention
Rhetorical questions are questions where an answer is not really expected. It is often used to express indignation or astonishment.
何尝 is usually placed before a verb phrase. It can also be placed before an adjective, but this is rarer.
Pay attention
A verb phrase is a combination of a verb and an auxiliary word. The auxiliary word can be either an auxiliary verb or an object.
Examples
我何尝说过这样的话？
When did I say this?
wǒ hécháng shuō guò zhèyàng de huà
经历了这件事以后，这些年，我的心里何尝平静过？
Have I really been at peace all these years after that incident?
jīnglì le zhè jiàn shì yǐhòu, zhè xiē nián, wǒ de xīnlǐ hécháng píngjìngguò
何尝 is more often used with the negative determiners 不 or 没 , which are placed right after it. The adverb 又 is often placed before 何尝.
or 没 , which are placed right after it. The adverb 又 is often placed before 何尝.Examples
我何尝不想去，只是没时间罢了
When did I ever say I didn’t want to go? I just don’t have time, that’s it
wǒ hécháng bù xiǎng qù, zhǐshì méi shíjiān bà le
这个建议我何尝没考虑过，只是这现在不太符合我们现在的具体情况
When have I not given fair consideration to an offer? The thing is that this offer doesn’t quite fit our current situation
zhè ge jiànyì wǒ hécháng méi kǎolǜguò, zhǐshì zhè xiànzài bú tài fúhé wǒmen xiànzài de jùtǐ qíngkuàng
其实，人生又何尝不是这样呢？
Actually, isn’t that what life is like?
qíshí, rénshēng yòu hécháng bú shì zhèyàng ne
足球很重要，友谊又何尝不是呢？
Football is important, but friendship isn’t?
zúqiú hěn zhòngyào, yǒuyì yòu hécháng bú shì ne