1、 不可数，抽象名词，物质名词（食物，材料，气体，液体）后用单数

　　2、 下列词后用单数动词：either, neither, each(of) ,no one,another ,the other, each one, something, nothing, anything, everything, everybody, everyone, nobody,

　　注意：each:放在句首：动词用单数

　　each:放在句末：动词与名词和代词一致

　　3、上述的单词用and连接，谓语仍用单数

　　No teacher and no student is allowed to go in.

　　Every hour and every minute is precious to us.

　　Each boy and each girl was a new book..

　　3、 表时间，重量，长度，价值，书名，学科名，或作为整体看的主语，后接单数动词。

　　注意：portion, section,指整体的一部分，后面的动词用单数

　　proportion，part，half后接复数名词，动词用复数

　　The iron an steel industry is the key link in our country.

　　Three weeks was allowed for making the preparations.

　　“Tales From the Shakspeare” is a bood by Charles.

　　5、下列引导词的短语，可作为插入语，不影响谓语动词的单复数：with, together with, like, but, as well as, rather than,

　　No one but Liming and Wangming was there.

　　An expert, together with some workers,was sent to help in this week.

　　6、and连接的对象不同，动词的单复数不同（一个冠词修饰用单数动词，两个冠词修饰用复数动词）

　　The writer and poet is going to give us a lecture.

　　A cart and a horse are seem in the distance.

　　7、动词的单复数与靠近动词的主语一致（就近原则）

　　or, either…or, neither…nor, not only…but also, there be句型

　　Not only the students but also the teacher was in the classroom.

　　There is a pen, a ruler, and, some books on the desk..

　　8、people，police，glasses，clothes，cattle只用复数

　　9、分数（百分数）+of+名（代），谓语和“名（代）”保持一致

　　Three fourths of its surface of the earth is sea.

　　It’s said that 40 percent of the doctors are women.

　　10、many+复数名词+复数动词

　　many+a+单数名词+单数动词

　　11、the +adj.表示一类人，用复数动词，表示一类物，用单数动词

　　12、both…and连接并列成分时，谓语用复数

　　13、none of+复数名词，谓语可单可复

　　14、量词词组做主语时，谓语和量词一致

　　a piece of……is

　　two pieces of……are

　　15、some+不可数名词/可数单数：谓语用单数

　　some+可数复数：谓语用复数

　　倒装

　　1、 副词放在句首引起倒装：here，there，now，out，in，away，down，then，blew……

　　Here comes the professor!

　　Then comes the bus!

　　Out went the children.

　　注意：上述情况中，如果主语是人称代词，主谓不倒装

　　Away he went.

　　Here it is.

　　2、作状语的短语前置+主谓倒装

　　Under the big tree was an old man.

　　Outside te classroom stood a boy

　　注意：介词短语表明明确地点，不用倒装.

　　In Berlin I met her

　　3、由as引起的让步状语从句，as——虽然，尽管，强调的部分要倒装

　　Young as he was, the boy could speak well.

　　Poor as he was, he was honest.

　　4、要用助动词引起倒装(有连词的，前面倒装后面不倒装)

　　① 否定前置：never, hardly, seldom, barely, sarcely, little, not only, neither, nor, no sooner…than…,=hardly…when…,=scarcely…when…,never before, not until(一…就)

　　No sooner had I reached home than it began to rain.

　　I don’t kown where he lives, neither(nor) does he.

　　②only 当修饰词做状语，要倒装.only修饰主语时，不倒装。

　　Only this mornint did I hear the sad news.

　　Not only the students, but also the teacher was in the room.(修饰主语)

　　③ so引起的倒装

　　I can speak English. So can my brother.

　　She enjoys teaching English. So does my sister.

　　注意：当前后主语一样时，不倒装，只表强调

　　It was cold. So it was.

　　Mary is a student. So she is.

　　4、 其他一些要强调的词前置+倒装

　　Well do I remember the stories.

　　Many a time has he given us good advice.

　　So loudly did he speak that everybody could hear him.

　　May you return in safety!(祝你平安)