1.When did you come back? 你是什么时候回来的? 2.We came back last Sunday. 我们上个星期日回来的。 3.I dropped my ice cream. 我掉了我的冰激凌 4.Do you live in London? 你住在伦敦吗? 5.Did they buy ice creams? Yes ,I did./ No, I didn't 他们买了冰激凌吗?是的/没有。 6.How many banamas do you want?Six, please. 你想要多少香蕉?六个。