taking turns and specifying a period I want to say that my husband and I alternate kitchen duties, and this is the best I can come up with. I start with 'every week' but I am not sure that properly conveys that the period of our turn is one week and during that week one person does all the different tasks - so in English, one week on, one week off. Any help to capture this more accurately would be appreciated. 毎週、私と夫は交代で食べ物を買って、りょうりをして、片づけます。