Emily Blunt schools Ewan McGregor in ‘Salmon Fishing in the Yemen’

If there were an award for laughter, Emily Blunt would win it, hands down.

In 15 minutes of conversation, the 29-year-old actress let out a distinctly British, high-pitched giggle at least a dozen times.

Of course, if you followed up a role as Matt Damon’s love interest in “The Adjustment Bureau” with the part of Ewan McGregor’s lover in “Salmon Fishing in the Yemen” (out March 9), you’d be laughing too.

“It’s always a little mind-boggling to realize that these famous actors know who I am,” says Blunt, who plays a young and energetic consultant in director Lasse Hallström’s film about a sheik’s vision to bring fly-fishing to the deserts of Yemen.

“But after the original shyness goes away, it becomes apparent they are just like everyone else.”

Blunt, on the other hand, is certainly not like everyone else: For one thing, she can’t dance.

“I had to learn to dance for ‘The Adjustment Bureau’ and it was nearly impossible,” she says. “I turned up with my knees knocking in my leotard and went home and cried my eyes out. I’m not much of a crier but it is mildly soul-destroying and exposing to do something physical that you are terrible at in front of other people.”

Despite practicing during filming of “Salmon Fishing,” which was actually shot in Morocco, she also can’t fish.

“I attempted to fish in Scotland and I managed to hook a dog,” she says. “It was a horrible moment but the dog turned out to be fine. Then I tried fishing in Wyoming and was much more successful. Of course, there were so many fish in the Snake River, an idiot could have caught one.”

Blunt, however, is adept at speaking Mandarin. Okay, adept might be an overstatement.

“I learned to speak Mandarin because there is this one scene in the movie where I have to speak to a group of Chinese engineers,” she says. “But I only know how to talk about sandstone walls and water pressure. I don’t know how to say, ‘Hello, my name is Emily.’”

She is also good at maintaining a happy marriage. The actress, who shot to fame in the 2006 film “The Devil Wears Prada,” has been married to “The Office” star John Krasinski since July 2010.

“Marriage is something that needs to be worked on every day,” she says. “I don’t know if I’m the one to give marital advice since I’ve only been married for a little over a year, but marriage is certainly easier if you are open, trusting and loving.”

Easier said than done, Blunt admits.

But, much like her latest character Harriet, the actress is a romantic at heart.

She chose to be in “Salmon Fishing” because of its hopeful message and feel-good ending.

“I think it is nice for people to appreciate a slow-burning, beautiful story that makes you feel good when it is over,” she says. “Just like fishing for salmon in the desert seems impossible, so is making a movie that is not generic. But we did it, and it is romantic and alluring and hopeful.”