think by oneself和think for oneself 的差别
问题描述：
think by oneself和think for oneself 的差别
答
think by oneself 独立思考
think for oneself 为自己着想
比如Jack is old enough to think for himself
杰克年纪不小了,可以自己拿主意了
这里的自己拿主意的意思就是为自己考虑,自己做决定的意思