both of both and 之间的区别
both of us：我们两个都
both he and I:我和他都
后者更突出了具体所指的哪两者,前者是概括的
eg:Both of us knew it.
我们两个都知道这件事
Both of them like dancing.
他们两人都喜欢跳舞.
Both of them speak German.
他们俩都讲德语.
He asked both of you.
他问你们两人.
Both audible and visible.
视听的听觉的和视觉的
both of 的反义词组 :neither ..nor.
eg:neither attractive nor tempting.
既不吸引人也不诱惑人的.
both and 的反义词组 :neither ..nor
都是强调:2者都不...
either or
eg:Either i or he will be selected.
我或者他会被选到..