天气很冷，所以请多穿一点衣服。

Tiānqì hěn lěng, suǒyǐ qǐng duō chuān yìdiǎn yīfu.

The weather is very cold, so please wear more clothes.

因为我昨天太忙了所以没有写作业。

Yīnwèi wǒ zuótiān tài máng le suǒyǐ méiyǒu xiě zuòyè.

Because I was too busy yesterday, I didn't do my homework.

这道题很简单，所以大家都做对了。

Zhè dào tí hěn jiǎndān, suǒyǐ dàjiā dōu zuòduì le.

This question is very easy, so everyone got it right.