1. 你为什么不去参加一个有氧健身班呢?

[ nǐ wèi shén me bù qù cān jiā yī gè yǒu yǎng jiàn shēn bān ne ? ]

Why don't you attend an aerobic class?

2. 你想不想和我一起去参加一个聚会?

[ nǐ xiǎng bù xiǎng hé wǒ yī qǐ qù cān jiā yī gè jù huì ? ]

Would you like to go to a party with me?

3. 请你跟我一起去参加一个舞会好吗?

[ qǐng nǐ gēn wǒ yī qǐ qù cān jiā yī gè wǔ huì hǎo ma ? ]

Would you please go to a dancing party with me?