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re = who are who’s = who is they’re = they are Explanation David, this is my mother.大衛(wèi) , 這是我媽媽。如 : 2. parents 指雙親 ,在英語中表示兩個(gè)或兩個(gè)以上的人或物時(shí) , 名詞要用復(fù)數(shù)形式。3. brothers 是名詞 brother的復(fù)數(shù)形式 , 在英語中 , brother指同輩的男性 ,意為 “兄長(zhǎng)或弟弟 ” 。 5. 介紹別人用句型: This/That is…. These/Those are …. 辨認(rèn)某人用句型: Is this/that…? 詢問別人用句型: Who’s/Who’re …?3a Complete the conversation and practice it with your partner. A: That _________ my family. That’s my