How to express the location that an action is done? The particle 'で' is used.The structure of the phrase will be in this form:[place] で[verb]= [verb] at [place]For example:eating at home= uchi de tabemasu = 家で食べますHence,My father is eating at home now. = chichi wa uchi de tabeteimasu. = 父は家で食べています。Other examples:I bought stamps at the post office. = watashi wa yuubinkyoku de kitte o kaimashita. =