go for a picnic 这个短语是否有错

go on a picnic\u548cgo for a picnic

\u7edd\u5bf9\u662f for\uff01\uff01\uff01\uff01\uff01
\u82f1\u8bed\u4e2d\u6ca1\u6709 go on a picnic \u8fd9\u4e00\u8bf4 \u56fa\u5b9a\u7528\u6cd5\uff1a go for a picnic
\u6709 go on a holiday / go on a journey
\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9

\u8fd9\u4fe9\u4e2a\u77ed\u8bed\u542b\u4e49\u76f8\u8fd1\uff0c\u5f88\u591a\u60c5\u51b5\u53ef\u4ee5\u4e92\u6362\u3002\u6b64\u9898\u4e2d\u7684plan\u660e\u786e\u8868\u660e\u4e86\u76ee\u7684\u6027\u3001\u8ba1\u5212\u6027\u3001\u610f\u613f\u6027\uff0c\u6240\u4ee5\u5e94\u7528go for a picnic.

\u9996\u5148\uff0cgo for\u9002\u7528\u4e8e\u67d0\u4eba\uff08\u6216\u67d0\u4e8b\u7269\uff09\uff0c\u610f\u4e3a\uff1a\u53bb\u627e\u67d0\u4eba\uff0c\u60f3\u5f97\u5230\u2026\uff0c\u4e89\u53d6\u653b\u51fb\uff0c\u62a8\u51fb\uff0c\u559c\u6b22
\u53bb(\u505a\u67d0\u4e8b)\uff0c\u53bb\u62ff(\u67d0\u7269)\uff0c\u8ff7\u4e0a\uff0c\u4e0e(\u4eba\u6216\u4e8b)\u6709\u5173\uff0c\u5bf9\u2026\u540c\u6837\u9002\u5b9c\u4f8b\u53e5\uff1aPeople tried to persuade him to go for a more gradual reform programme.\uff08\u4eba\u4eec\u8bd5\u56fe\u8bf4\u670d\u4ed6\u91c7\u53d6\u66f4\u4e3a\u6e10\u8fdb\u7684\u6539\u9769\u65b9\u6848\u3002\uff09 \u800cgo on \u542b\u6709\u7ee7\u7eed\u4e4b\u610f\u3002

\u7136\u540e\uff0c\u8868\u793a\u53bb\u505a\u67d0\u4e8b\u65f6\uff0cgo for\u5e26\u6709\u53ef\u80fd\u6027\u3001\u9009\u62e9\u6027\u3001\u76ee\u7684\u6027\u6216\u8981\u6c42\u4e00\u5b9a\u7684\u52aa\u529b\u3002\u800cgo on\u6ca1\u6709\u8fd9\u4e48\u591a\u7684\u611f\u60c5\u8272\u5f69\uff0c\u4e5f\u542b\u6709\u4e00\u5b9a\u7684\u7ee7\u7eed\u4e4b\u610f\uff0c\u540e\u591a\u63a5strike\uff08\u7f62\u5de5\uff09\uff0ca diet\uff08\u8282\u98df\uff09\uff0c
a pilgrimage\uff08\u53bb\u671d\u5723\uff09

\u6240\u4ee5\uff0c\u5982\u679c\u662f\u63d0\u5efa\u8bae\uff0c\u6216\u8981\u8868\u8fbe\u201c\u60f3\u201d\u65f6\uff0c\u7528go for a picnic\u6bd4\u8f83\u597d\uff0c\u5982\u679c\u6ca1\u6709\u5f88\u591a\u611f\u60c5\u8272\u5f69\uff0c\u7528go on a picnic\u5c31\u53ef\u4ee5\u4e86\u3002

郁闷

明明是对的

这样的词还有go for a walk

不是我说 你那老师不配当老师

是对的啊 这两个都对的 你好好看看把

都对，但要看语境了
go for a picnic 去郊游
go on a picnic 继续郊游

总之两种说法老外都能听明白，有些东西不必那么教条。