在it引起的强调某句子成分的句子中，动词用单数更好一些：

　　It is they who(代表it，而不代表 they)is(比 are好)wrong.

　　It is you that(代表 it，而不代表 you)often makes(比 make好) such mistakes.

　　但实际上用复数的人也不少。

　　2)第二大类：主语是单数还是复数?

　　数词，不管是泛指还是特指，只要是指人或物，通常都跟有复数动词：

　　Seven were killed.

　　Two are missing.

　　Few know it.

　　A few have been thrown away.

　　Several were wounded.

　　Hundreds have become homeless.

　　Both have come.

　　Thousands upon thousands were starved.

　　Some were killed，others were wounded.

　　A large variety of umbrellas are on sale.

　　A few are satisfied，but a great many are disappointed and very angry.

　　The majority(or generality)of human beings are selfish.

　　Fifty dozen of stockings have just arrived.

　　Ten pair(s)of gloves are on display.

　　Four yoke of oxen are coming.

　　Twenty head of cattle are grazing.

　　A number of articles are damaged.(但：The number of thir-teen is unlucky.)

　　One and a half(more than one) apples are entirely rotten.(但：One apple is rotten.)

　　No students are interested in this subject.(但：No student is interested in it.)

　　Many hours and days have been spent.(但：Many an hour and day has been wasted.)

　　More persons than one are suspected.(但：More than one per-son is suspected.

　　There is[or are]more than one person.)

　　量词一般看作单数：

　　So much has already been done.

　　A large amount of money has been spent on agriculture.

　　A large quantity of food was left rotten.

　　Little has been done.

　　A little is enough.

　　A high degree of development is in sight.

　　A great deal was lost.

　　Too much vegetables(即使用复数) spoils my appetite.

　　Not much clothes is on sale in this small town.

　　Too much old books has been crammed into my head.

　　有些单词或短语，若跟有不可数名词，则成为量词，因此是单数，如跟有可数名词，则成为数词，这时就成了复数：

　　There is enough(量词)water.

　　There are enough(数)rooms.

　　More water is required.

　　More trucks are required.

　　Some coffee has been ordered.

　　Some apples have been stolen.

　　NO milk was sold in this store.

　　No oranges were sweet in this season.

　　None of the money is wisely spent.

　　None of the houses are good to see.

　　Most of the milk was spilled out.

　　Most of the bananas were rotten.

　　A lot of money has been spent.

　　A lot of people have been invited.

　　Abundance of meat is consumed every day.

　　Abundance of watermelons are on sale.

　　Plenty of water is used in this city.

　　Plenty of pigs are killed every day.

　　Half of the liquor is alcohol.

　　Half of the inhabitants are workers.

　　Part of the money is spent on the movies.

　　Part of the books are damaged.

　　The rest of the cost was paid by him.

　　The rest of the children were still young.

　　Three fourths of the earth's surface is covered by water.

　　Three fourths of the residents are Chinese.

　　The bulk of his property has been sold.

　　The bulk of the inhabitants are Indians.

　　A mass of snow lies before my door.

　　A mass of people are gathering on the square.

　　A large percentage of profit has come to nothing.

　　A large percentage of crimes are due to alcohol.

　　A large proportion of his income is spent on liquor.

　　A large proportion of the residents are Arabs.