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③ Do you mind if I use your car for a day? 對于句③所作回答可以說 Never mind. /Not at all. 表“不介意”。 如果不同意,可以說 I’m sorry you can’t. 或 I’m really sorry, but I have to use it today. 要避免說 No, you can’t. 這樣顯得很不禮貌。表示請求幫助或請求允許時,除了 can, could之外,還可以用 may,句子的表達方式也各有不同,可以用不同的方式來表示同一個概念。這種情況下不能把 could看作can的過去式。Could I go out for dinner with my friends? Sure, that should be OK. Could we get something to drink after the movie? No, you can’t. You have a basketball game tomorrow. Could you please take the dog for a walk? OK, but I want to watch one show first. Could you please take