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. 12.—Why did Lucy look unhappy? —Because she was so careless that she made many spelling (mistake) in her homework. went to my (uncle) house yesterday. many times do you brush your (tooth) every day? a short rest after two (hour) hard work, and you won’ t feel too tired. policemen inventions potato mistakes uncle’s teeth hours’ 。 莉莉和露西共有的房間 莉莉和露西各自的房間 a picture of our classroom a map of Chinatoday’s newspaper the world’s population Lily and Lucy’s room Lily’s and Lucy’s rooms (3)表示“某人家”、 “店鋪”、“診所”等處所。 今天的報紙 世界人口 (2)表示一件東西為兩人戒三人共有時 ,只需在最后一個名詞后加“‘ s” ,后面所跟名詞用單數 。 婦女節(jié) 兒童節(jié) Mike’s car my mother’s birthday Teachers’ Day Women’s Day Children’s Day (2)無生命的名詞的所有格一般由“ of+表示無生命的物體的名詞”構成。 邁克的小汽車 我媽媽的生日 ② 以 s結尾的復數名詞只加“‘”。 (2 ) 有些集體名詞通常只用作復數 , 如 pe o ple( 人