既然我有车了，我就能更自由地出行了。

___Now that I have a car, I can travel more freely.

既然你是成年人了，你应该更独立。

___Now you are an adult, you should be more independent.

既然她对项目更了解了，她感到更有信心了。

___Now that she understands the project better, she feels more confident.