这是一份关于高中英语定冠词和不定冠词的练习题，包括单项选择题、填空题、改错题和问答题。定冠词“the”用于特定或已知的事物，而不定冠词“a”或“an”用于泛指或不确定的事物。
单项选择
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I saw __ elephant in the zoo yesterday. A. a B. an C. the D. /
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__ students in this class are from China. A. a B. an C. the D. /
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My brother is __ engineer. A. a B. an C. the D. /
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__ sun rises in the east and sets in the west. A. a B. an C. the D. /
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Can you give me __ apple on the table? A. a B. an C. the D. /
填空题
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There is __ interesting book on the shelf.
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__ Tokyo is the capital of Japan.
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__ roses in the garden are beautiful.
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She is __ honest girl.
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I need to buy __ new pen.
改错题
下面每句话中都有一个错误，找出并改正。
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My sister is a teacher in the school. A. a -> the
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I saw a moon in the sky last night. A. a -> the
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He is good at playing an basketball. A. an -> /
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Tom is studying in a University of Oxford. A. a -> the
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She wants to be a astronaut when she grows up. A. a -> an
问答题
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什么情况下使用定冠词“the”？ 答：使用“the”表示特定的或已知的事物，比如特定的人、地点、事物或者事物的某个特定部分。
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什么情况下使用不定冠词“a”或“an”？ 答：使用“a”或“an”表示泛指的或不确定的事物，比如一个人、一件事物或者一种情况。
