However虽然有“无论如何”的意思..但并存“然而,可是”的意思..
Anyhow是“无论如何,不管用什么方法”的意思..更肯定
anyhow:副词1.carelessly随随便便,杂乱无章的:Thebookwerelyingontheshelfjustanyhow
2.=anyway:无论如何,即便如此:Anyhow,youcantry
however:1.副词,不管,无论如何,(后接形容词或者副词)例如:Youwillnotmovethestone,howeverstrongyouare
2.副词,表转折,然而,例如:Shewasill,however,shewenttowork
3.连词,无论如何,不管怎样,例如:Youcantravelhoweveryoulike