什么样的词能加介词

名词后可以加介词如
I will give the gift to you.
介词后可以加动词的-ing形式,组成介宾结构
动词后也可以加介词,如living without you.
in the world是介词短语

名词后可以加介词;

动名词后可加介词;

介词也行,比如:stand by at anytime(时刻做好准备)