Unit 2We weren't very rich, but we were happy.1 . My sister was the eldest child and she left school whenshe was only 12 to help my mother at home. 我姐姐是家里最大的孩子,她 12 岁的时候辍学在家帮妈妈做事。eldest 为形容词 old 的最高级形式,意为“年龄最大的”。如:His eldest son is a doctor. 他的长子是一名医生。elder, eldest 与 older, oldest(1)elder 与 eldest 主要用于家人之间表明长幼关系,通常只用于人而不用于物,只用作定语而不用作表语 ( 作名词时可用作表语,此时通常有冠词或物主代词修饰 ) ,也不与 than 连用。如:This is my eldest daughter. 这是我的大女儿。Jim is my eldest. 吉姆是我最大 ( 的孩子 ) 。(2)older 与 oldest 是 old 通常的比较级和最高级,可用于人或物,可用作表语或定语,可与than 连用。如:He is older than me. 他比我年纪大。This is the oldest temple in Hong Kong.这是香港最古老的庙宇。—①John, is Henry your twin brother?—Oh, yes.He is twenty minutes ________ than me.A . heavierC . tallerB . elderD . olderD 题意:“约翰,亨利是你的双胞胎哥哥吗?”“噢,是的。他比我大 20 分钟。”根据题意可排除 A 、 C ; elder不与 than 连用,故选 D 。②The girl ________ is running over there is my________ sister.A . who; oldC . which; olderB . that; elderD . who; olderB题意:那个在那边跑步的女孩是我的姐姐。定语从句中,先行词为人,关系代词应用 who/that ; older比……大,通常用于比较级; elder 年长的,常作定语修饰名词,表示长幼关系,符合题意。故选 B 。2 . I was carrying some heavy bags on my bike and I felloff !我正用自行车驮着一些很重的箱子,然后我摔倒了!fall off 意为“ ( 从…… ) 跌落”,其后可直接接宾语。如:Be careful not to fall off the ladder.当心别从梯子上掉下来。fall over ( 向前 ) 摔倒,跌倒fall down (from) ( 从…… ) 滑倒,倒下fall behind 落后Be careful, or you will ________ the tree and get hurt.A . fall offC . fall overB . fall downD . fall behindA 题意:小心点,否则你会从树上摔下来弄伤自己的。 fall off = fall down from 从……跌落,倒下; fall over( 向前 ) 摔倒,跌倒; fall behind 落后。根据题意可知选 A 。