Времена Present:1. I buy the yougurt.2. I am buying the yougurt.3. I have bought the yougurt.Времена Past:1. I bought the yougurt.2. I was buying the yougurt.3. I had bought the yougurt.Времена Future:1. I will buy the yougurt.2. I will be buying the yougurt.3. I will have bought the yougurt.