1. Discuss the negative aspects of using public transport, such as overcrowding, delays, and lack of privacy. 2. You can also mention personal experiences or general observations that highlight these disadvantages.

1. 讨论使用公共交通的负面方面，如拥挤、延误和缺乏隐私。 2. 您还可以提到个人经验或普遍观察，突出这些缺点。