go for a picnic,等于 go picnicing,因为picnic是可数名词,所以用前者,一般指去干什么都这样用,比如 go for a swim,go for a walk
哪一个对go for a picnic 还是go for picnic
go for a picnic,等于 go picnicing,因为picnic是可数名词,所以用前者,一般指去干什么都这样用,比如 go for a swim,go for a walk