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選C。D.hundreds ofB.hundred18.There are 根據(jù)第一個(gè)空可知,此處填入基數(shù)詞,答案為nine,第二個(gè)空填入序數(shù)詞,答案為fifth,故選A。 fifth【答案】 A 【解析】【分析】句意:我外公家有9個(gè)孩子,并且他是第五個(gè)孩子。D. fiveC. fiveB. fifthchild of the family. A.s family and he is the 【點(diǎn)評(píng)】考查數(shù)學(xué)詞的讀法,注意平時(shí)識(shí)記其讀法規(guī)則。fiftyeight thousand, six hundred and twentysixD.eightyfive thousands, six hundreds and twentysixB.【點(diǎn)評(píng)】本題考查數(shù)詞,注意基數(shù)詞表示幾點(diǎn)。根據(jù)It39。根據(jù)o39。晚上10點(diǎn)之前睡覺(jué)是健康的。D.C.B.s healthy to fall asleep before 10 .A.15.—When do you usually go to bed on school nights? —At around ________ o39。millions of【答案】 D 【解析】【分析】句意: 你知道地球是幾百萬(wàn)動(dòng)物的家園嗎?millions of,固定搭配,幾百萬(wàn)的;數(shù)詞+million,表示具體的……百萬(wàn),此時(shí)million是單數(shù)形式;空前沒(méi)有具體數(shù)詞,因此用millions of,故選D。C.millions14.Did you know that the earth is home to ______ animals? A. 【點(diǎn)評(píng)】考查數(shù)詞和名詞的用法。sixteenyearolds: 十六歲的孩子(青少年),是名詞性短語(yǔ);sixteenyearold:通常只做形容詞用,十六歲的;sixteen years old:十六歲。D.SixteenyearoldsB.Sixteenyearold13.?dāng)?shù)量詞作定語(yǔ)應(yīng)用連字符,并且量詞用單數(shù),故選B。D.C.B.12.______ should not be allowed to go out at night. A.根據(jù)常識(shí)可知七月是一年中第七個(gè)月,所以用序數(shù)詞seventh,故選C。因?yàn)樵谶@個(gè)月暑假開(kāi)始了。D.C.B.11.—Which month of the year do you like best? — July, the _________ month, because summer vacation begin in this month.A.句中book是單數(shù),four后面用可數(shù)名詞復(fù)數(shù),排除A、C, 所以用序數(shù)詞fourth, 序數(shù)詞前常常加the ,故選D。D.the fourB.four注意分?jǐn)?shù)+of+名詞作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞的結(jié)構(gòu)。 分?jǐn)?shù)+of+名詞作主語(yǔ)時(shí),如果名詞是復(fù)數(shù),謂語(yǔ)動(dòng)詞用復(fù)數(shù)結(jié)構(gòu), 故選D。句意:我們班五分之二的學(xué)生下周要去北京參加夏令營(yíng)。D.C.B.of the students in our class _____going to the summer camp in Beijing next week. A.9. 【點(diǎn)評(píng)】考查整數(shù)的表達(dá)。hundred of【答案】 B 【解析】【分析】句意:有兩百名學(xué)生來(lái)自朝鮮。hundredshundredhundreds of根據(jù)語(yǔ)境和生活常識(shí),選擇正確的序數(shù)詞。根據(jù) Grain Rain often starts in April ,可知四月份是一年中的第四個(gè)月,要用序數(shù)詞fourth,故選B。A: Third第三; B: fourth第四; C: fifth第五。fifth【答案】 B 【解析】【分析】句意:一年有24個(gè)節(jié)氣。fourthThird 【點(diǎn)評(píng)】考查數(shù)詞,注意名詞復(fù)數(shù)前是基數(shù)詞,定冠詞后是序數(shù)詞的用法。 twelve【答案】 C 【解析】【分析