pay 是实意动词,意思是“付钱,付诸.”,pay attention to 词组中可以理解为 付诸关注,也就是“注意.”的意思.
词组可以直接构成谓语,陈述句中无需其他动词,如:You should pay attention to your English.
提问时用助动词do开头,如:Do you pay attention to your baby everyday?
其他知识:
pay more attention to...更加关注某事物
draw attention ...吸引注意力
希望能帮到你!