The screen of my macbook suddenly broken down how can I do to recover
Depending on the age of your MacBook, you'll have one or more connections on the side that an external screen can connect to. When you identify your MacBook you'll be able figure out the best way to connect a screen, whether it's directly or using an adaptor.

If the external monitor doesn't help, the onboard graphics may have gone pop, which might have affected the screen. In that case, go the Target Disk mode route -- but you'll need another Mac and a connecting lead (Thunderbolt or Firewire depending the age of the MacBook) for it to work.