He didn't need to. All the people he needed to talk to were is own friends from France and as such would have had someone to translate for the local English.
yes
against the English
raise taxes
William, Duke of Normandy
The Normans (French) were fighting the Anglo-saxons (English)
To get from Normandy to Hastings William had to cross the English Channel.
Harold Godwin and the English army
Harald Hardrada, William of Normandy, Prince Edgar and Harold Godwin.
William the Bastard (as he was illegitmate) or officially the Duke of Normandy which he was before he conquered England.
The English Channel which is part of the North Sea
The English King, Harold hardrada and William, Duke of Normandy.
So he could kill the englishmen