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Unit1 Getting ready for school准备回校准备回校booksbookstore 书店book 书 + store 商店=bookstore 书店fruit store水果店toy store玩具店supermarket 超市in the supermarket 在超市schoolbag书包a pencil 一把铅笔a pencil-case 一个文具盒a pen 一把钢笔a ruler 一把尺子a story book一个好看的包一个好看的包nice/ai/a nice bag一本故事书一本故事书过去式过去式(过去时过去时):表示过去的发生动表示过去的发生动作或过去存在的某种状态作或过去存在的某种状态 。当句子出现时间的单词当句子出现时间的单词:yesterday、just now，就要用过去时表示。动，就要用过去时表示。动词要改成过去式。词要改成过去式。 动词原形 动词 过去式am，is wasare weredo,does didbuy boughtgo wentI buy a book.我买一本书。two pencilsa schoolbaga rulerI buy a book just now.看一看，找一找。I go to the bookstore yesterday.I bought a book just now.I went to the bookstore yesterday.xx我刚才买了一本书。我昨天去了超市。I am in the classroom.Are you in the classroom?Yes ,I am. / No,I am not. you in the classroom just now?(Are , Were)Yes ,I was./ No,I was not.Were一个句子中如果出现“yesterday”“just now”，本句为过去时，句子中的动词要发生变化，以下为三种情况：(1).句子中的“do does”要变成“did”(2).句子中的am、iswas Arewere(3).句子中的动词要变成过去式: A、规则变化，直接在动词的后面加“ed”， 如 play played B、不规则变化，如go went buy bought
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