to wave sth at sb

to wave sth at sb wave to sb.和wave at sb.有什么区别 wave at sb. wave to sb.与 wave at sb.有什么区别吗? wave to sb.例句? wave at和wave to区别 be good at和show sb sth to sb造句 aim sth at sb get sb to do sth.send sb sth .have a problem doing.shout at throw sth to sb与throw sth at sb有什么区别? throw sth to sb与throw sth at sb头什么区别? be angry with sb.with sth.还是be angry with sb.at(或是to)sth.