How do you know the fish are happy?

The lesson’s vocabulary

Tone colorsā tone 1á tone 2ǎ tone 3à tone 4a neutralHide colors

• 古老
  gǔlǎo

  ancient; old; age-old

• 追求
  zhuīqiú

  to pursue (a goal etc) stubbornly; to seek after; to woo

• 无非
  wúfēi

  only; nothing else

• 幸福
  xìngfú

  happiness; happy; blessed

• 自由
  zìyóu

  freedom; liberty; free

• 财富
  cáifù

  wealth; riches

• 即
  jí

  namely; that is; i.e.

• 由此可见
  yóucǐ-kějiàn

  from this, it can be seen that...

• 必然
  bìrán

  inevitable; certain; necessity

• 联系
  liánxì

  to get in touch with; to integrate; to link

• 反问
  fǎnwèn

  to ask (a question) in reply

• 莫非
  mòfēi

  can it be possible that; could it be

• 永远
  yǒngyuǎn

  forever; eternal

• 无法
  wúfǎ

  unable to; incapable of

• 理解
  lǐjiě

  to comprehend; to understand

• 感受
  gǎnshòu

  perception; a feeling; an impression

• 提醒
  tíxǐng

  to remind; to call attention to; to warn of

• 轻易
  qīngyì

  easy; simple; rashly

• 标准
  biāozhǔn

  standard; norm; (adjective) standard

• 判断
  pànduàn

  to judge; to determine

• 衡量
  héngliáng

  to weigh; to examine; to consider

• 单调
  dāndiào

  monotonous

• 答案
  dáàn

  answer; solution

• 乃
  nǎi

  thus; so; therefore

• 思考
  sīkǎo

  to reflect on; to ponder over

• 哲学
  zhéxué

  philosophy

• 提问
  tíwèn

  to question; to quiz

• 相处
  xiāngchǔ

  to be in contact (with sb); to associate; to interact

• 本身
  běnshēn

  itself; in itself; per se

• 智慧
  zhìhuì

  wisdom; intelligence

• 确定
  quèdìng

  definite; certain; fixed

The lesson’s grammar

• 由此可见 / 可想而知: from this we see / one can imagine

  Facts。由此可见，+ conclusion | …，(其…) 可想而知

• 无非 / 不外乎: nothing but, no more than

  S + 无非(是) + X (而已) | 不外乎 + A、B

• 未尝 / 何尝: not necessarily not / how could… not

  未尝不 + V (= may well) | 何尝 + (不) + V ？(rhetorical question)

• 岂 / 岂不是: wouldn't it be…?

  岂 + V/Adj ？ | 这样岂不是 + consequence ？

• 莫非: could it be that…?

  莫非 + hypothesis + (不成/吗)？

• 乃 / 即: is, namely (written copula)

  A + 乃 + B (= A 是 B) | A，即 B (= that is)