Can Keira Knightly play a likeable character?

Cases in point:

Bend it Like Beckham (2002)

In this film Keira plays a soccer player who befriends the new player, Jess (played by Parminder Nagra - FYI playing a very convincing 18 year old when she was 27) but then gets majorly pissed when she nearly kisses their coach. On top of that, Keira's mum nearly ruins Jess's sisters wedding screaming that her daughter is not a lesbian.

Love Actually (2003)

In this Keira plays a newlywed who's husbands friend is secretly in love with her for some unknown reason. Most annoying line (while viewing his recording of the wedding ceremony) "I look quite pretty don't I?"
Gag me.

Never Let Me Go (2010)

Ruth, Kathy and Tommy are friends who grow up together in an english boarding school. Although Kathy and Tommy are clearly more suited, Ruth (played by of course Keira) steals him away. Typical. And not to be harsh but I don't think she can pull off playing 18 anymore. Who am I kidding? This whole post is harsh.

Atonement (2007)

This one is a bit of a stretch I'll admit. Knightly plays Ceclia whose sister Briony accuses her lover of a crime he was not guilty of. So basically she's just a bit of a bitch of a sister. Love the green dress she wears though.

Pirates of the Caribbean (2003)

I am one of the few who have not seen any of the Pirate series. So can someone tell me, is she like able in this? I'm always jealous of anyone who gets to pash Orlando Bloom.