Bring your drinking and dining habits out of doors. Clink your glasses to these new (or newly refurbished) backyards. When tiny French bistro Tree opened up this past winter, one could linger for hours over a Burgundy and juicy steak au poivre. Their new, roomy outdoor spot is a welcome addition to your evening itinerary — and the light frisee a welcome addition to your belly (190 First Avenue; 212-358-7171). They show you how to do it right on A Voce’s patio, where you can pick at antipasti and slurp on icy La Fragola (muddled strawberries, prosecco, gin, mint) while admiring the dappled light on the adjacent lemon trees (41 Madison Avenue; 212-545-8555). There’s enough room for about 50 of your friends outside at Per Lei, though you’ll want to keep the carpaccio to yourself. P.S. If you’re moved by the fresh air to dance on the tables, so be it (1347 Second Avenue; 212-439-9200). Those Italians like to keep it in the family. And they welcome you into theirs at Spirito, a new Park Slope trattoria run by four expats, including DJ Mariano (of Turntables on the Hudson). Ask for the piatti del giorno and pay homage to the Vespa before heading out to the garden (287 9th Street; 718-832-0085). Boerum Hill’s Donna da Vine wine bar just inaugurated its sunny little backyard, where you can enjoy a glass of Lambrusco and crostini with olive tapenade among the fresh herbs (378 Atlantic Avenue; 718-643-2250). And, we’re out.