undershirt

I put it on.

私は着ます

I put on an undershirt.

私は肌着を着ます

I put on an undershirt in the bedroom.

私は寝室で肌着を着ます

I put on an undershirt in the bedroom on a cold night.

私は寒い夜に寝室で肌着を着ます

I put on an undershirt in the bedroom with my wife on a cold night.

私は妻と寒い夜に寝室で肌着を着ます