go for a picnic是什么意思?

go for a picnic在美国英语中是一个习惯用法，而且go for之后还可以跟其他的表示户外活动的名词搭配；go on a picnic这个短语中真正属于习惯用法的是on跟后面表示旅游、露营等外出活动的那个名词的搭配，也就是说picnic不一定非要跟go搭配才能使用，而是可以跟别的词搭配使用也可以，而且这种用法英美两国英语都认同：
1. (American English) go for (a walk, a drive, etc.): to do an activity (such as walking or driving a car) that usually involves going somewhere(美国英语)通常指到某个地方去做某种活动，比如说散步、开车等
It's a nice day. Let's go for a picnic.天气不错；咱们去野餐吧。
Would anyone like to go for a swim?有人愿意去游泳吗？
She went for a walk/stroll after dinner.晚饭后她出去溜达去了。
We will take a chance with the weather and go for a picnic.我们将怀着天气可能会好的侥幸心情去野餐。
On Saturday mornings we like to go for a drive out in the countryside.星期六早上我们喜欢在乡下开车兜风。

2. on: used to introduce an activity that someone is doing, particularly travelling(引出所进行的活动，特别是旅行)处于…情况中，在从事…中
She's on a course all this week.她本周一直人在旅途中。
I met him on vacation in Canada.我在加拿大度假中遇到他。
My girlfriend is often away on business trips.我的女朋友经常商务旅行。
If the weather is nice, we'll go out on a picnic.如果天气好, 我们将去野餐。
Children were on a picnic and frolicked in a field.孩子们在野餐，在田野上嬉闹。
On a lovely autumn evening we drove out on a picnic.在一个美好的秋夜，我们开车外出野餐。
He took the paraffin stove on a picnic and the ruddy thing wouldn't work.他带了那个煤油炉去野餐，但是那个该死的东西根本用不了。

扩展阅读：apple 15 pro max ... my stupid heart ... can go swimming everyday ... i will go to swim ... go for a holiday ... be tough as nails ... be going to go swimming ... come on the way abc ... agoda booking ...