[译] 天气许可的话,我们明天去野餐。
[误] Weather permitting, we’ll go to a picnic tomorrow.

[正] Weather permitting, we’ll go on a picnic tomorrow.
[注] 表示“去野餐”,应该说 go on a picnic 或 go for a picnic,但不能说 go to a picnic。而且 picnic 本身也可作动词用，意思是 go on a picnic，它的过去式和过去分词均为 pic-nicked,现在分词是 picnicking。