both of的用法及例句（both of的用法）
1、both 指的是两者全都 all指的是三者以上 both of +us/them/you 我们、他们、你们俩 both A and B A和B俩 both 和all 用于be动词之后，实义动词之前，强调俩都，全都的概念 My father and mother are (both) teachers. They (both) work at the same school. be away from是leave 的延续性动词。 2、leave 是瞬间动词 用在表示延续性时间for...