本质上

Běnzhí shàng, zhè shì yī zhǒng zérèn.

Basically, this is a responsibility.

This sentence illustrates that in essence, the topic in question is viewed as a responsibility.

Běnzhí shàng, tāmen shì yīyàng de.

Essentially, they are the same.

Here, '本质上' is used to express that in essence or fundamentally they are the same, irrespective of appearance.

Běnzhí shàng, zhè shì gè yīnggāi qìngzhù de shì.

Essentially, this is something to celebrate.

This sentence implies that despite possible doubts or complications, the core aspect of the event is worth celebrating.

Wǒmen běnzhí shàng shì shànliáng de.

We are essentially good.

This sentence means that, fundamentally, humans' nature is inclined to do good rather than evil.

Tā běnzhí shàng réngrán shì gè háizi.

In essence, he is still a child.

This sentence expresses that, fundamentally or at his core, the person in question still retains childlike qualities.

Nǐ běnzhí shàng shì duì de.

You are basically right.

Despite any minor flaws in argument or presentation, the speaker indicates that the listener is fundamentally correct.

Běnzhí shàng, tā shì gè yǒngzhě.

Basically, he is a brave man.

This sentence illustrates the fundamental trait of braveness in the person being spoken about.

Běnzhí shàng, wǒmen xūyào gèng duō de shíjiān qù lǐjiě.

Essentially, we need more time to understand.

This sentence expresses that the fundamental requirement for understanding something is more time.

Tā běnzhí shàng shì gè yìshùjiā.

He is basically an artist.

This statement conveys that despite possibly various talents or roles, the person in question is fundamentally an artist.

Běnzhí shàng, zhège wèntí de jiějué xūyào wǒmen gòngtóng nǔlì.

Essentially, solving this problem requires our joint efforts.

This sentence states that fundamentally, in its very nature, the solving of a problem requires cooperation, hence the use of '本质上'.