1、表示不确定数量时,要用复数形式,同时要在其后加介词of,thousands of,后接可数名词复数。 【点评】考查数词thousand的用法。注意表示确定数量与不确定数量的用法。2The number of the students in our school is about four _. _ of them are girls.thousand; Two thirdsthousands; Two third【答案】 A 我们学校的学生人数大约是四人。三分之二是女孩。four基数词后用thousand的原形,分数表达形式是分子是基数词,分母是序数词,分子大于一,分母用复数形式,故三分之二是
2、two thirds , 故选A。 【点评】考查数词,注意分数的用法。3Do you know the boy is sitting next to Peter?Yes. He is Peters friend. They are celebrating hisbirthday.who; ninththat; ninewhich; ninth 你知道那个坐在彼得旁边的男孩吗? 是的。他是彼得的朋友。他们正在庆祝他的九岁生日。分析句子结构可知,第一空所在句子是定语从句,先行词是人,连接词在从句中作主语,所以应该用who/that引导,which连接定语从句时先行词应该是物,故排除C;nine九,
3、基数词;ninth第九,序数词;第二空根据空后的birthday为名词单数可知,此处需要序数词,表示某人几岁生日应该用序数词表示第几个生日,故选A。【点评】考查定语从句的连接词的辨析和序数词。注意区别定语从句的连接词的使用原则,理解单词词义。4Every year, _ books are given away to the poor children in the countryside. thousands ofthousand of【答案】 B 每年上千本书被捐给农村的贫困孩子们。thousand和of 连用时要用复数,thousands of,成千上万的,固定短语,故选B。【点评】此题
4、考查数词用法。注意固定短语thousands of。5_is the population of China, Jack?Let me think for a moment, it is about_.How many; 1,400 millionWhat; 1,400 million 140 million 140 million中国的人口是多少,杰克?让我想想,大约是14亿。提问人口用what,根据常识可知,实际情况是中国有1,400 million,人口,故选B。【点评】考查特殊疑问词,注意what提问人口的用法。6Our country is nearly years old. Wel
5、l celebrate its birthday on October 1, 2019 around the country. seventy, seventyseventy, seventiethseventieth, seventyseventieth, seventieth我们的国家接近70岁了,我们将在2019年10月1日全国庆祝它的第七十个生日。seventy,70,基数词;seventieth,第70,序数词。表达几岁时用基数词+year(s)+old,表达几岁生日时用ones+序数词+birthday,故选B。【点评】考查数词表达,注意平时识记固定搭配,理解句意。7There a
6、re people in Dales family. They live on the floor. five;fifth;【答案】 C 在戴尔的家里有五个人。他们住在九楼。基数词放在名词前修饰名词,表示数量,因此用five;序数词放在floor前面表示顺序,因此用ninth,故选C。【点评】此题考查数词。注意基数词和序数词的使用规则。8_ should not be allowed to go out at night. Twelve-years-oldTwelve-year-oldsTwelve years oldTwelve year olds12岁的孩子不应该被允许夜晚出去。数量词作定
7、语应用连字符,并且量词用单数,故选B。 【点评】考查数量词作定语的用法。9 should not be allowed to drive. Sixteen-year-oldSixteen years oldSixteen-year-oldsSixteen year olds16岁的青少年不允许开车。sixteen-year-olds: 十六岁的孩子(青少年),是名词性短语;sixteen-year-old:通常只做形容词用,十六岁的;sixteen years old:十六岁。结合句意,故答案为C。 【点评】考查数词和名词的用法。注意识记名词sixteen-year-olds。10Its th
8、e _ time for me to visit the Shunfeng Park. And I want to visit it a sixth time. fifthfivefifthsthe five这是我第五次参观顺丰公园,我想第六次去参观。A序数词,第五,B基数词,五,根据the定冠词可知,定冠词后是序数词,故选A。【点评】考查数词,注意定冠词后是序数词的用法。11Two _ students _ to the opening ceremony last Friday. hundreds; were invitedhundred; were invitedhundreds of;
9、invitedhundred of; invited 两百名学生被邀请参加了上周五的开幕式。hundred和数字连用用单数,两百是two hundred,学生和邀请之间是被动关系,用被动语态,根据可知是一般过去时,所以用一般过去时的被动语态,一般过去时的被动语态是was/were+及物动词的过去分词,students是复数,用 were invited,故答案为B。 【点评】考查数词和被动语态。注意hundred和数字连用时用单数。12When do you usually go to bed on school nights?At around _ oclock. Its healthy t
10、o fall asleep before 10 p.m.nineninthtwelvetwelfth上学的晚上你通常什么时候睡觉?大约9点。晚上10点之前睡觉是健康的。nine九,是基数词;ninth第九,是序数词;twelve十二,是基数词;twelfth第十二,是序数词。根据oclock此处表示钟点,用基数词,排除BD两项。根据Its healthy to fall asleep before 10 p.m.可知,10点之前睡觉是健康的,因此他在9点睡觉,故答案选A。【点评】本题考查数词,注意基数词表示几点。13In the Ukraine(乌克兰), a _ of the population are Russia speakers. fivethfifty在乌克兰,五分之一的人口是俄罗斯人。此处考查分数的表达方法,分数词是以基数词和序数词合成的,基数词代表分子,序数词代表分母。 分子大于1时,分母需要用复数。
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