非(要) … 不可 (simply must / insist on)

Insistence is stronger than a preference

• A child rejects every alternative and insists on buying one particular toy.
• he他tāto want absolutely非要fēi yàoto buy买mǎithat那个nà geplaything玩具wán jùno other way不可bù kě。 — The child presents that purchase as non-negotiable.

Locate the pattern in real examples

• simply must非fēi(want要yào) … no other way不可bù kě (simply must / insist on): he他tāto want absolutely非要fēi yàogo去qùno other way不可bù kě。; this这个zhè gecan / will会huìI / me我wǒsimply must非fēito participate参加cān jiāno other way不可bù kě。
• Read the whole clause before choosing a translation. The examples show the pattern in use; the context below determines what the speaker claims.

Follow the speaker

he他tāsimply must非fēiwant要yàogo去qùno other way不可bù kě。

• In the opening situation: he他tāto want absolutely非要fēi yàoto buy买mǎithat那个nà geplaything玩具wán jùno other way不可bù kě。
• The child presents that purchase as non-negotiable.

Check the limit of the explanation

• The pattern can express personal insistence or necessity.
• It does not prove that buying the toy is objectively required; context identifies whose demand it is.

Repair the form before interpreting it

• The form he他tāto want absolutely非要fēi yàoto buy买mǎithat那个nà geplaything玩具wán jùsee 可不是可不kě bù needs repair here. Write he他tāto want absolutely非要fēi yàoto buy买mǎithat那个nà geplaything玩具wán jùno other way不可bù kě instead; keep the word or frame in its demonstrated order.
• Form and meaning are separate checks. After the repair, explain the sentence in its situation rather than treating a familiar translation as a universal rule.

Keep the distinction

Read the full reference: HSK 6 grammar — Sentence patterns.