彼はいつもあれこれと文句をつける。

Meaning
he always complains about this and that

Vocab used in this sentence

he, his, him, boyfriend
a, the, is, am, are, will
いつも
always, every time, regularly, constantly, forever, habitually
あれこれ
this and that, arekore, various things, here and there
and, with, if
文句
complain, complaint, phrase, objection, grievance
o, the, to, wo
つける
put, apply, immerse, dunk

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