英文~sentence

Just a little to change :
He went up to a mountain and burned the dry wood ( no s - because woods means forest. Only wood is okay) to send out signal for help.

the word SIGNAL is countable, so should say: ... send out a signal for help.

He climbed up onto the top of the mountain, and burnt the dry woods. So as to give out a signal for help .

He went up to a mountain and burnt the woods as sent out the message for help.

He climbed up the mountain and burned the bavin for the weft.
**bavin指明是生火用的柴