翻译句子

1,时光飞逝

As time goes by.

2,我热的受不了了

I can't stand the heat anymore.

3,我给你发了封邮件

I sent  you an e-mail.

4,这本书花了我10元

This book takes me ten yuan.

5,你可以把门开着

You can leave the door open.

6,第一步总是最重要的

It's the most important to take the first step.