go on a picnic和go for a picnic -足球竞猜

go on a picnic和go for a picnic选哪个？
【答】：表示“去野餐”，我们可以用：
go on a picnic或go for a picnic
go on a picnic比go for a picnic更常见。

have a picnic 野餐

let's go on a picnic. 
我们去野餐吧。
we decided to have a picnic in the park.
我们决定在公园里野餐。
they went for a picnic on the beach.
他们去海滩野餐。

所以go on a picnic和go for a picnic和have a picnic都是可以的。