是介词。例句:They arrived late at the airport.他们晚到了机场。I'll be at home all morning.我一上午都在家。 at的用法 at只能做介词,意味着它后面必须跟一个名词或动名词。 at可以用在时间几点几分前,比如at 7:00,at 10:15 at也可以在地点前,at home,at school,at the top of the mountain,at the foot of the mountain. at还可以用在一个明确的目标点前,如point at him指着他,throw at him扔向他,shout at him对着他嚷嚷,laugh at him嘲笑它,smile at him,对着他微笑,surprised at the news对这个消息感到吃惊。 (责任编辑:admin) |