be with sb和together

问题描述:

be with sb和together
i want to stay with you和i want to stay with you together两句的意思有什么区别
be with sb不就是和某人在一起的意思吗,那干吗还加together
那么说“今天我和Sam一起吃的午饭”除了sam and i had lunch togerther today,还能说成i had lunch with sam today吗?
我只有7分了.不好意思

没啥区别
可以那样说
重心不一样而已