3. No! 不行！
If the boss comes to you with a project to do, it's not always in your best interest to refuse to do it. You could suggest someone else do it or declare how busy you already are, but to say no might not be appreciated.
如果老板找你做一个项目，但项目并不总是你最感兴趣的。如果想要拒绝他，你可以建议其他人来做，或是告诉他你现在有多么忙，直接说不行也许会让你的老板很不高兴。