The Smiths were also invited.

　　 The English like to be with their family at Christmas.

　　 The Chinese are kind and friendly.

　　 当上述形容词转化为名词，作某种语言解时，谓语动词用单数，如：

　　 French is spoken in many countries.

　　 A chemical works has been built here.

　　 There are two iron and steel works in our province.

　　 There is / are no means of learning what is happening.

　　 Is /Are there any other means of getting there?

　　 Every possible means has been tried since then.

　　 All possible means have been tried since then.

　　 No news is good news.

　　 Physics studies heat, light, sound, etc.

　　 Mathematics was the only course he failed in.

　　 Politics is now taught in all schools.

　　 注①：如果指某人在该学科方面的实用能力或学习成绩时，谓语动词单复均可，如：

　　 His mathematics is / are rather weak.

　　 I think your physics is / are better than mine.

　　 My politics are / is not so good.

　　 注②：politics如果作“政治策略/观点/事务”解时，谓语动词应当用复数形式，如：

　　 What are your politics?

　　 All work and no play makes Jack a dull boy.

　　 Early to bed and early to rise makes a man healthy, wealthy and wise.

　　 I, who am old, have never seen such a thing.

　　 Those who agree with him raise their hands.

　　 He lives in the house which is near our school.

　　 It is I who am knocking at the door.

　　 但是在“one of + 复数名词+定语从句”结构中，定语从句中谓语动词的单复数形式有下列三种情况：

　　 ① 根据先行词为复数名词而定，采取复数形式，如：

　　 Tom is one of the boys who are on time.

　　 His brother is one of the students who are ready to help others.

　　 ②　当one之前有the only (或the) 等限定词和修饰语时，定语从句应根据one而定，采取单数形式，如：

　　 She is the only one of the girls who comes from the countryside.

　　 She is the only one of the singers who was invited to give us a talk last year.

　　 ③　在非正式文体中，“one of +复数名词 ”之后的定语从句中的谓语动词也可用单数形式，如：

　　 Mr White is one of those people who believes in ancient maths.

　　 Which is your room? Which are your rooms?

　　 What we need is more money. What we need are bicycles.

　　 What he said is true / is difficult to believe.

　　 What he gave me are only two pens.

　　 What he left me are but a few old books.

　　 The best is yet to come.

　　 The good is not always beautiful.

　　 The wounded was a good friend of his.

　　 The rich are against the new law.

　　 The blind are taught in special schools.

　　 The sick have been cured and the lost have been found.

　　 New York Times is a well-known newspaper / has a wide circulation / is published daily.

　　 His “Selected Poems” was published in 1965.

　　 When was the United Nations founded / established?