基数词和序数词分类复习知识点精析精练 1. 基数词:表示数目多少的数词,如 one, five, ten, thirty, sixty-five 等 1) 数字的写法和读法: a. 百位和十位之间要加and;如124:one hundred and twenty-four. b. 三位数以上的数,从个位往前数,每三位数加一个逗号“,”,从后往前数的第一个逗号代表thousand, 第二个逗号代表million, 第三个逗号是billion, 这几个词不能用复数,每节从左至右按百,十,个的顺序表示。 如:888,888 eight hundred and eighty-eight thousand, eight hundred and eighty-eight 2) 表示具体、准确的数目时,hundred, thousand, million等数词后不能加-s。 如:four hundred, five thousand, six million 3) 当hundred, thousand等数词与of连用,表示不具体、不准确的数目时,词尾需加s。修饰名词时名词用复数,前可加several或many。 如:several hundreds of trees = several hundred trees, thousands of students, millions of people 4) 表示整十的基数词用复数形式可以表示人的大约岁数或年代。 如:He is in his early twenties. 他才二十出头 This took place in the 1930s. 这事发生在20世纪30年代。 2. 序数词:表示顺序先后的数词,如 first, sixth, tenth, twenty-first 等1) 大部分序数词是由基数词加后缀-th构成,但有的序数词有其特殊形式。 如:1-3分别为first, second,third;第五fifth;第八eighth;第九ninth;第十二twelfth 2) 以-ty结尾的表示“几十”的基数词,先把y变为i,再加-eth。 如:twenty-twentieth forty-fortieth 3) 表示两位以上的非整数基数词变为序数词时,只变个位数。 如:ninety-nine—ninety-ninth one hundred and two – one hundred and second 4) 其他情况,均在词尾加-th。 如:ten-tenth one hundred-one hundredth 5)序数词前通常要用定冠词,但表示考试或比赛等的名次时,通常可省略其前的定冠词。如:My room is on the second floor and his on the third. 我的房间在三楼,他的房间在四楼。 He was (the) third in the exam. 他考试得了第三名。 注:有时序数词前不用定冠词,而用不定冠词,表示次第在原有基础上的增加。意为“再,又” 如:We’ll have to do it a second time. 我们得再做一次。 题六: Then arose the question _________ we were to get so much money. A. where B. that C. about which D. in which 题七: Before the sales start, I make a list of ______ my kids will need for the coming season. A. why B. what C. how D. which 题八: The way he did it was different ______ we were used to. A. in which B. in what C. from what D. from which 题九: When you are reading, make a note of _______ you think is of great importance. A. which B. that C. what D. when 题十: The shopkeeper did not want to sell for _______ he thought was n ot enough. A. where B. how C. which D. what 答案 题六: A 解析:考查同位语从句的引导词。arose the question 意思是“出现一个问题”, 后面是一个同位语从句, 是进一步解释什么样的问题。根据句意,应该选表示地点的where (在哪里,到哪里) 题七: B 解析: 考查宾语从句的引导词。_____ my kids will need for the coming season从句作介词of的宾语。分析句式结构可知,空格处在在从句中充当need的宾语,可排除A和C。what意为“什么、所……的事物”; which意为“哪个(些)”。根据句意可知,应选what(所……的事物)。句意:在大甩卖开始前,我把孩子们在下个季节里要用到的东西列了一个清单。 题八: C 解析:本题考查固定短语 be different from和宾语从句的引导词。介词from后是宾语从 句,但从句中be used to 后面少宾语,且根据上文是我们过去习惯的方法,这里用what符合语意。what 当“所……的事物”讲时,根据句意可以灵活地翻译成“所…..的地方、所…..的时间”等。这里what就理解为“所……的方法”。 题九: C 解析:考查名词性从句作介词宾语。_______ you think is of great importance是从句作介词of的宾语。you think是插入语, 所以从句中缺少主语。四个选项中只有what和which 可以充当主语。what意为“所……的事物”,符合句意;which意为“哪个(些)”,不符合句意。 题十: D 解析:考查名词性从句作介词宾语。_______ he thought was not enough是从句作介词for的宾语。he thought 是插入语,所以从句中缺主语。四个选项中只有what和which可以在从句中充当主语。what意为“所……的事物,符合句意;which意为“哪个(些)”,不符合句意。句意:店主并不想以一个他认为不足够的价钱卖东西。 ![]() |
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