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1、both,either,neither both Both可作形容可作形容词词、代、代词词或副或副词词用，意思是用，意思是“两个两个”、“双方双方”、“两个都两个都”。在句中可作主。在句中可作主语语、宾语宾语或同或同位位语语。如：如：Both are right.(主主语语)I like both.(宾语宾语)Both pencils are mine.(同位语）同位语）三者呢？三者呢？both一、一、Both和和both of后都可接复数名后都可接复数名词词，构成名，构成名词词组词词组。Both后的名后的名词词前可有定冠前可有定冠词词、指示代、指示代词词或物主代或物主代词词作修作修饰饰限定，
2、也可限定，也可没有；没有；both of后的名后的名词词前却一定要有定冠前却一定要有定冠词词、指示代、指示代词词或物主代或物主代词词作修作修饰饰限定。限定。both(the theseboth(the these，her)childrenher)childrenboth of the(theseboth of the(these，her)childrenher)children；both of childrenboth of children。Both of后可接人称代后可接人称代词宾词宾格，格，both后后则则不可；但人称代不可；但人称代词宾词宾格后可接格后可接both。both of us
3、(youboth of us(you，them)them)both us(youboth us(you，them)them)us(youus(you，them)boththem)both二、二、Both与与动词连动词连用用时时，大多数放在系，大多数放在系动词动词be之后，其它之后，其它动词动词之前。之前。His parents workers.They reading.若句中若句中谓语动词谓语动词包含情包含情态动词态动词或助或助动词时动词时，both大多放在第一个情大多放在第一个情态态动词动词或助或助动词动词之后。之后。The bridges be built this year.kate a
4、nd Mary gone to England.are bothare bothboth enjoyboth enjoymust bothmust both have both have both 三、三、Both可与可与and构成并列构成并列连词连词，连连接两个性接两个性质质相同并在句中作相同相同并在句中作相同成分的并行成分的并行结结构。构。Both he and his brother are good at English.(连连接两个主接两个主语语)She can both dance and sing.She can both dance and sing.(连连连连接两个接两个接两
5、个接两个谓语动词谓语动词谓语动词谓语动词)(连连连连接两个表接两个表接两个表接两个表语语语语)Mary is both kind and beautiful.Mary is both kind and beautiful.她能歌善舞。玛丽既友善又漂亮。四、含四、含both的句子的句子变为变为否定否定时时，是将，是将both改改为为neither。Both of the boys are clever.Both of the boys are clever.Both of the boys are not cleverBoth of the boys are not clever.Neither
6、 of the boys are clever.Neither of the boys are clever.两个男孩都聪明两个男孩都聪明。两个男孩都不两个男孩都不聪聪明明。并不是两个男孩都聪明并不是两个男孩都聪明(一个聪明一个愚笨一个聪明一个愚笨)。不完全否定不完全否定含含bothand的句子变为否定句时，将的句子变为否定句时，将bothand改为改为neithernor.，连接的两个部分若是名词，可以是单数，也可，连接的两个部分若是名词，可以是单数，也可以是复数。以是复数。I know both the man and the woman.I know both the man and t
7、he woman.Both beats and birds would have the bat as their friend.Both beats and birds would have the bat as their friend.I know neither the man nor the woman.I know neither the man nor the woman.Neither beats nor birds would have the bat as their friend.Neither beats nor birds would have the bat as
8、their friend.neither 一、一、neither作主作主语语，表示，表示两者中没有一个两者中没有一个。Neither of them likes football.二、二、neither.nor.表示表示既不既不也不也不 She likes neither butter nor cheese.（连连接两个接两个宾语宾语）Neither dad nor mum is at home today.（连连接两个主接两个主语语）就近原就近原则则Neither you nor I _at home yesterday.Neither you nor I _at home yesterda
9、y.Neither I nor you _at home yesterday.Neither I nor you _at home yesterday.werewas三、三、当表达一个人没有做某事，另一个人也没做同一当表达一个人没有做某事，另一个人也没做同一类类事事时时，可用可用neither或或nor进进行行简简略回答略回答 Neither/Nor+Neither/Nor+助助助助动词动词动词动词 /情情情情态动词态动词态动词态动词 /be/be动词动词动词动词+主主主主语语语语。He doesnt go to school by bike.Neither/Nor do I.They did
10、nt go to the park yesterday.They didnt go to the park yesterday.Neither/Nor did we.Neither/Nor did we.They cant speak in German.They cant speak in German.Neither/Nor Neither/Nor can can we.we.I havent had breakfast.I havent had breakfast.Neither/Nor Neither/Nor have have we.we.肯定呢？肯定呢？I have had bre
11、akfast.I have had breakfast.So have So have we.we.either 一、一、either.or.意意为为或者或者或者或者；不是；不是就是就是之意。表示两者之一，之意。表示两者之一，连连接句子中两个并列的成分。接句子中两个并列的成分。When the girl is happy,she either sings or dances.When the girl is happy,she either sings or dances.(此句中此句中either.or.连连接两个接两个动词动词，因，因为为主主语语是是单单数第三人称，数第三人称，谓语动词谓语动词要用其相要用其相应应的形式。的形式。)二、二、either.or.连连接两个主接两个主语时语时,遵循遵循就近原就近原则则。Either you or I am going there tomorrow.Either you or I am going there tomorrow.三、三、either用在否定句的句末，表示用在否定句的句末，表示也也的意思。的意思。If you dont go there.I wont,either.If you dont go there.I wont,either.