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not=isn’t are not=aren’t:我用am,你用are,is連接他,她,它。單數(shù)名詞用is,復(fù)數(shù)名詞全用are。變疑可,往前提,句末問(wèn)號(hào)莫丟棄。變否定,更容易,be后not莫忘記。疑問(wèn)否定任你變,句首大寫(xiě)莫遲疑。專(zhuān)題練習(xí)及答案一、寫(xiě)出下列完全形式的簡(jiǎn)縮形式。4I am=___________he is=___________they are=___________she is=___________we are=___________let us=___________is not=___________are not=___________It is=___________who is=___________二、選擇題( ) a girl. A. am B. is C. are( )2. He___________ a boy