Мы учили поэмы, но китайскую поэзию

Мы учили поэмы, но китайскую поэзию мы не изучали.

Результаты (английский) 1:

We taught the poem, but Chinese poetry we have not investigated.

Результаты (английский) 2:

We have learned the poem, but Chinese poetry we have not studied.

Результаты (английский) 3:

We were taught poetry, but the Chinese poetry we have not studied.