我在做语法题看到介词。我怎么知道他后面是不定时还是动名词啊...答:介词to:pay attention to,look forward to,stick to,get down to,be devoted to,apply...to,be addicted to,contribute...to,reply to,respond to,get/be used to,get/be accustomed to,the key/answer to,the entrance to,object to,be opposed to,adapt oneself to,adjust oneself to ....