你帮我买两张门票，可以吗？

Nǐ bāng wǒ mǎi liǎng zhāng ménpiào, kěyǐ ma?

Can you help me buy two tickets?

动物园的门票很便宜。

Dòngwùyuán de ménpiào hěn piányi.

The zoo ticket is very cheap.

今天的音乐会门票卖完了。

Jīntiān de yīnyuèhuì ménpiào mài wán le.

The tickets for today’s concert are sold out.