We have had enough of the loud construction noise.

have 是助动词，在这里构成现在完成时态。 had 是动词 have 的过去分词形式，与助动词 have 一起构成现在完成时态，表示"已经"。 enough 是形容词，意思是"足够的、充分的"，在这里表示"受够了"。 have had enough 是一个固定搭配，表示"已经受够了"，表达对某种情况的不满或厌倦。