I don't think my sister____babysit the baby today,____?
来源:百度知道 编辑:UC知道 时间:2024/06/10 20:02:32
B.has to ,doesn't she
C.don't have to ,does she
D.don't have to ,does she
请选出正确选项,并详细分析原因,谢谢!
答案是A.
C和D不对,因为my sister是单数,不能用don't.
has to 是必须,一定的意思。句子分三个部分,中心部分是 my sister has to babysit the baby today 意为:我妹妹(或姐姐)今天必须照顾婴儿。如果把 has to 换成doesn't have to 则是我妹妹(或姐姐)今天不需要照顾婴儿的意思。在中心部分之前加的 I don't think 表示否认,为我不认为 ...... 之意。在本文中,“我”的想法是妹妹不需要照顾婴儿。如果句子换成 I don't think my sister doesn't have to babysit the baby today, 双重否定等于肯定,即我认为妹妹(或姐姐)今天必须照顾婴儿之意。双重否定是英语习惯用语中常见的,如:he doesn't like her not talking to him. 但是就本文而言,双重否定不符合习惯用法。如果要表达“我认为妹妹(或姐姐)今天必须照顾婴儿”的意思,应该直说 I think my sister has to babysit the baby today.
句子最后用 does she? 加强语气,相当于中文句尾“是吗?”的语气。一般而言,如果前一句是肯定语气,句子最后应该用否定语气;而如果前一句是否定语气,句子最后就应该用肯定语气.I don't think my sister has to babysit the baby today 是否定语气,故用肯定语气 does she? 结尾。如果原句为肯定语气的 I think my sister has to babysit the baby today,结尾就应该是否定语气的 doesn't she? 所以B不对。
A
sister 后面应该用第三人称形势直接排除CD 前否后肯排除B
A
这是think的反意疑问句,如果主语是第一人称I和we,反意疑问句要看think后面的人的执行动作,这里就是看my sister的执行动作,因为my sister发出的动作已经否定前移了,所以不需要再用