12.【选择题】 The company had about 20 notebook computers but only one-third ____ used regularly. Now we have 60 working all day long.
A. is B. are C. was D. were 【答案】B
【解题关键点】one-third 对应于复数含义的notebook computers，而且下划线处应采用一般过去时表示过去的情况与现今的情况形成对比，因此应填入were。 【结束】
13.【选择题】______ of the land in that district ____ covered with trees and grass. A. Two fifth; is B. Two fifth; are C. Two fifths; is D. Two fifths; are 【答案】C
【解题关键点】分数的分子在英语中用基数词表示，分母用序数词表示，在分子大于1时序数词后要加’s，所以应以two fifths的形式表示五分之二(中间常加连字符)主语是分数、百分数时，谓语动词的形式取决于其本身的含义，本题中two fifths后的of the land in that district属于单数含义，因此题干中的谓语部分应采用单数形式。
【结束】 14.【选择题】 About 60 percent of the students ____ from the south; the rest of them ____ from the north or foreign countries.
A. are; is B. is; is C. is; are D. are; are 【答案】D
【解题关键点】主语是分数和百分数的词作主语时，以“of 短语”中的名词为判断标准。Students是可数名词复数，谓语动词用复数，them也是复数，故选D. 【结束】
十二.不定代词作主语的句子谓语动词用单数, 有些不定代词做主语谓语用复数. 1.【选择题】No one ___to the school during the vacation.
A. go B. going C. goes D. will be going
【答案】C
【解题关键点】不定代词作主语的句子谓语动词用单数, someone, anyone, no one, everyone, something, nothing等复合不定代词作主语，谓语用单数；either, neither, each, little, much 等不定代词作主语时，谓语也用单数。 【结束】
2.【选择题】Sir, none of the telephones ___ working
A. is B. are C. has D. have
【答案】A
【解题关键点】不定代词作主语的句子谓语动词用单数,不定代词none (of) 作主语：若指不可数名词，谓语用单数；若指复数可数名词，谓语可用单数(较正式)或复数(非正式)。该题是向上级汇报比较正式，故选A 【结束】
3.【选择题】No one ___to read such books, these are rubbishes. A. wanted B. wants C. want D. is wanting
【答案】B
【解题关键点】不定代词作主语的句子谓语动词用单数, someone, anyone, no one, everyone, something, nothing等复合不定代词作主语，谓语用单数；either, neither, each, little, much 等不定代词作主语时，谓语也用单数。 【结束】
4.【选择题】Nothing ___yet certain.
A. is B. are C. was D. were 【答案】A
【解题关键点】不定代词作主语的句子谓语动词用单数,someone, anyone, no one, everyone, something, nothing等复合不定代词作主语，谓语用单数；either, neither, each, little, much 等不定代词作主语时，谓语也用单数。译：一切都还没有肯定。 【结束】
5.【选择题】All ___well that ends well.
A. are B. is C. has D. have 【答案】B
【解题关键点】不定代词作主语的句子谓语动词用单数, 有些不定代词做主语谓语用复数。不定代词all 作主语：若指人，谓语用复数；若指事物或现象，谓语通常用单数。译：结局好一切都好。 【结束】
6.【选择题】Few of them ___any good..
A. is B. are C. was D. were
【答案】B
【解题关键点】有些不定代词做主语谓语用复数。不定代词both, few, several, many作主语：此时谓语要用复数。译：它们没有几个有用。 【结束】
7.【选择题】Many ___their lives in the cause of truth.
A. is given B. are given C. has given D. have given 【答案】D
【解题关键点】有些不定代词做主语谓语用复数。不定代词both, few, several, many作主语：此时谓语要用复数。译：为了真理许多人献出了生命 【结束】
8.【选择题】 All__ equal before the law.
A. is B. are C. has D. have 【答案】B
【解题关键点】有些不定代词做主语谓语用复数。不定代词all 作主语：若指人，谓语用复数；若指事物或现象，谓语通常用单数。译：法律面前，人人平等。 【结束】
9.【选择题】Don’t leave your seat ,the rest ___ later.
A. is arriving B. are arriving C. is arrived D. are arrived
【答案】B
【解题关键点】有些不定代词做主语谓语用复数。不定代词the rest 作主语：指不可数名词时谓语用单数，指可数名词时谓语用复数。【结束】 10【选择题】Both of the brothers ___not good at singing. A. is B. are C. has D. have
【答案】B
【解题关键点】有些不定代词做主语谓语用复数。不定代词both, few, several, many作主语：此时谓语要用复数。 【结束】
十三.A number of” 接复数名词。当它出现在 主语前时，谓语动词用复数。意为“许多
主语是The number of接复数名词, 谓语动词用单数。
1.【选择题】A number of pages ___found missing
A. is B. are C. has D. have 【答案】B
【解题关键点】A number of” 接复数名词。当它出现在 主语前时，谓语动词用复数。意为“许多”。 【结束】
2.【选择题】The number of secretaries in this company ___never under 100. A. is B. are C. be D. being 【答案】A
【解题关键点】主语是The number of接复数名词, 谓语动词用单数。译为“??的数量”。 【结束】
3.【选择题】The number of people browsing in the bookshop ____sharply during lunch hour. A. is B. are C. has D. have
【答案】A
【解题关键点】主语是The number of接复数名词, 谓语动词用单数。译为“??的数量”。
【结束】
4.【选择题】The number of students in a foreign language class___ usually limited to no more than thirty.
A. have been B. are C. is D. will be
【答案】C
【解题关键点】主语是The number of接复数名词, 谓语动词用单数。译为“??的数量”。 【结束】 5.【选择题】The number of people invited ___sixty but a number of them ___absent for different reasons.
A. were/was B. was/was C. was /were D. were/were
【答案】C
【解题关键点】主语是The number of接复数名词, 谓语动词用单数。译为“??的数量”。 A number of” 接复数名词。当它出现在 主语前时，谓语动词用复数。意为“许多” 【结束】
6.【选择题】A number of staff in the company ___female. A. is B. are C. has D. have 【答案】B
【解题关键点】A number of” 接复数名词。Staff单复数同型。当它出现在主语前时，谓语动词用复数。意为“许多”。 【结束】
7.【选择题】The number of students from the southeast __small. A. is B. are C. has D. have
【答案】A
【解题关键点】The number of接复数名词, 谓语动词用单数。译为“??的数量”。 【结束】
8.【选择题】A number of rare Chinese medicines ___picked in domestic. A. has B. have C. is D. are
【答案】D
【解题关键点】A number of” 接复数名词。当它出现在 主语前时，谓语动词用复数。意为“许多。 【结束】
9.【选择题】The number of gingkoes ____ with the days pasting.
A. decreases B. decreasing C. decrease D. have decreased 【答案】A
【解题关键点】The number of接复数名词, 谓语动词用单数。译为“??的数量”，在过去的时间里，银杏的数量逐渐减少。 【结束】
10.【选择题】A number of different colors of flowers ___in spring.
A. bloom B. blooms C. is bloomed D. are bloomed
【答案】A
【解题关键点】A number of” 接复数名词。当它出现在 主语前时，谓语动词用复数。意为“许多。 【结束】
十四.a series of?, a species of?, a portion of? 之后接单数 名词或复数名词， 其后的谓语动 词用单数。
1.【选择题】This pair of canvas shoes ___made in Fujian.
A. is B. are C. has been D. have been
【答案】A
【解题关键点】a pair of 之后接复数名词，其后的谓语动词用单数，鞋是被制造，故选A。 【结束】
2.【选择题】A pair of new trousers____ among the rubbish, it is very strange. A. were found B. was found C. has found D. have found 【答案】B
【解题关键点】a pair of ?之后接复数名词，其后的谓语动词用单数.由于裤子是在垃圾中被发现的，所以应采用被动语态的形式，故选B。 【结束】
3.【选择题】A panel of us___ to hire a boat and travel through Holland by canal. A. has decided B. have decided C. was decided D. were decided
【答案】A
【解题关键点】主语由 \portion of, a series of, a pile of, a panel of +名词\或由“a kind/sort/type of, this kind/sort/type of+名词” 构成，of之后接单数 名词或复数名词， 其后的谓语动 词用单数。 【结束】
4.【选择题】A pile of apple logs ___ beside the hearth. A. has set B. have set C. was set D. were set 【答案】C
【解题关键点】
【结束】
5【选择题】A portion of reports___ deceiving.
A. is B. are C. be D. being
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