（6） 动词不定式、动名词、名词性从句做主语时，谓语动词用单数。

Early to bed and early to rise makes one healthy，wealthy and wise.（指“早睡早起”一件事）

To work hard is necessary 努力工作是很必要的。

What I said and did is of no concern to you. 我所说的和所做的与你无关。

Reading three classical novels and making some social investigations are assignments for the students during the holiday. 学生假期的任务是读3本古典小说和做社会调查。（注意：指不同性质的两件事，谓语用复数 ）

（7） many a，more than one + 单数可数名词，尽管表示复数意义，谓语仍用单数。

Many a student has made such a mistake. 很多学生都犯了这样的错误。

More than one stranger agrees with me. 不止一个陌生人同意我的看法。

［注意］

在“more + 复数名词 + than one”结构做主语时，谓语动词用复数。

More persons than one have been involved. 卷入其中的远不止一人。

（8） 由every ...and every ...；each ... and each...；no ... and no...；many a ...and many a ... 等连接的并列主语，谓语动词用单数。

Every man and every woman working here is getting along well with me. 在这工作的所有人和我相处得都很好。

No difficulty and no hardship has discouraged him. 没有什么困难或挫折可以打败他。

（9） 由 all of，most of，half of， a lot of，part of 等加名词构成的主语，谓语动词的数取决于该名词的单复数。

All of us are going to see the game. 我们所有人都去看电影。

All of his time was spent on gambling.他把所有时间都花在赌博上了。

Three-fourths of the people are illiterate.3/4的人都是文盲。