[析]either作代詞時(shí)由兩個(gè)含意，其一是兩者中隨便哪一個(gè)，如：You can take either.其二是兩者中的每一個(gè)。但要注意的是either后要加單數(shù)名詞，如果作主語則謂語動(dòng)詞也要用單數(shù)形式。
[誤]Either you or I are right.
[正]Either you or I am right.
[析]在either…or,或neither…nor連接兩個(gè)主語時(shí)，其謂語動(dòng)詞要與和其相近的那個(gè)主語相配。
[誤]I have three sisters. Neither of them is a doctor.
[正]I have three sisters. None of them is a doctor.
[析]neither用于兩者中無一是，而none則用于多于兩者中的人或事物無一是。
[誤]He doesn't like Beijing opera. I don't like too.
[正]He doesn't like Beijing opera, I don't like either.
[析]either作為"也"講時(shí)，要用于否定句中，而too則用于肯定句中。
[誤]We like both this little boy.
[正]We both like this little boy.
[析]both作同位語時(shí)，它在句中的位置有：在be動(dòng)詞之后，如：We are both students.在實(shí)意動(dòng)詞之前，如：The parents both want to go to the cinema.用于第一助動(dòng)詞之后，如：We have both read these English novels.使用時(shí)要注意以下句子的實(shí)際含意：Both of us are not right.應(yīng)譯為：我們倆不都對。Neither of us is right.才應(yīng)譯為：我倆都不對。又如：I can't give you both of the books.意為：兩本書我不能全給你，而I can't give you either of the books.才為：兩本書我全不能給你。
[誤]We each has a ticket for the concert.
[正]We each have a ticket for the concert.
[析]each作句子主語時(shí)其謂語動(dòng)詞要用單數(shù)形式，如：Each of us wants to learn English well,但each作同位語時(shí)，則應(yīng)以原名詞的數(shù)為準(zhǔn)。
[誤]Every of us has to pass the exam.
[正]Each of us has to pass the exam.
[析]every只可作形容詞，不可作代詞，而each既可作形容詞，又可作代詞，在作形容詞時(shí)each側(cè)重強(qiáng)調(diào)個(gè)體，而every 則側(cè)重于全體。
[誤]Everyone of us should do housework two hours a day.
[正]Every one of us should do housework two hours a day.
[析]everyone不可與of結(jié)構(gòu)相連接使用，而every one則可以這樣用。
[誤]I should read English everyday.
[正]I should read English every day.
[析]要注意的是every day是"每天",而everyday則是形容詞為"日常的".如：everyday English日常英語，everyday life日常生活。
[誤]There are trees on every sides of the street.
[正]There are trees on each side of the street.
[析]every用于三者或三者以上的每一個(gè)，而each用于二者或二者以上的每一個(gè)。因?yàn)榻值乐挥袃蓚?cè)，所以只能用each而不能用every.
[誤]All my parents are engineers.
[正]Both my parents are engineers.
[析]all用于三者或三者以上的全部，而both 則用于兩者的全部。
[誤]All of students might make some mistakes.
[正]All of the students might make some mistakes.
[正]All students might make some mistakes.
[析]非特指的名詞前可用all但不可用all of結(jié)構(gòu)，也就是講all of結(jié)構(gòu)后面的名詞前一定要有定冠詞。其他與all有關(guān)的習(xí)慣用法還有：
all the year round, all week, all day, all winter
[誤]The all village was flooded.
[正]All the village was flooded.
[析]all作修飾語時(shí)要用在所有修飾詞之前。
[誤]The post office is on other side of the street.
[正]The post office is on the other side of the street.
[析]單數(shù)可數(shù)名詞如在泛指某一個(gè)時(shí)用another,而特指時(shí)則要用the other,因街道只有兩邊，而不在這邊必定是在另一邊，所以要用特指。請參考下表的用法以便于記憶。
單數(shù) 復(fù)數(shù)
泛指 another形容詞 作定語 作名詞
another代詞 other others
特指 the other形容詞
the other代詞
the other the others
[誤]There are ten students here Where are the others students?
[正]There are ten students here.Where are the others?
[正]There are ten students here Where are the other students?
[析]the others=the other students.
[誤]The old man has two sons. One is a teacher, another is a doctor.
[正]The old man has two sons. One is a teacher, the other is a doctor.
[析]another用于泛指，如：Is it far from here to the station?I'm sorry. I have no idea. One may say it is quite near; another may say it is far from here.但在特指時(shí)則要用the other.它可以用作定語，the other one,也可以用作代詞the other,但the other用作代詞時(shí)它的含意一定是單數(shù)。如果指三者或者三者以上的情況時(shí)，則要用one…another…the other.或者one…a second…the third…
[誤]Some people like sports. The others like reading.
[正]Some people like sports. Others like reading.
[析]在泛指的復(fù)數(shù)名詞前用some…others…others…來表示某些人……某些人……某些人……
[誤]Please remember to water the flowers each other day.
[正]Please remember to water the flowers every other day.
[析]every other day為每隔一天。是習(xí)慣用法，不要隨意改動(dòng)。又如：on the other hand另一方面。
[誤]Many know him, but few likes him.
[正]Many know him, but few like him.
[析]few用于可數(shù)名詞，意為幾乎沒有，但few作主語時(shí)謂語動(dòng)詞則要用復(fù)數(shù)形式，而a few為有一些。
[誤]You have few friends, haven't you?
[正]You have few friends, have you?
[析]little與few用于句中時(shí)，均要按否定句看待。
[誤]Much of what you said are true.
[正]Much of what you said is true.
[析]much用于不可數(shù)名詞，作主語時(shí)用單數(shù)謂語動(dòng)詞。而many用于可數(shù)名詞，它作主語時(shí)用復(fù)數(shù)形式的謂語動(dòng)詞。
[誤]This room is enough large for the students to live in.
[正]This room is large enough for the students to live in.
[析]enough 可以用作代詞，如：There is enough of the food. 又如：Enough has been done for the work,但enough 還可以作形容詞來修飾名詞，這時(shí)enough可以放在名詞之前，也可放在名詞之后，如：money enough 與enough money都是對的。但當(dāng)enough作副詞修飾形容詞時(shí)，則只能置于形容詞之后了。
[誤]I want any books to read. Do you have any?
[正]I want some books to read. Do you have any?
[析]按照語法any用于疑問句和否定句，而some用于肯定句。
[誤]Would you like any thing to drink?
[正]Would you like something to drink?
[析]在由would you like發(fā)出的問句中，表達(dá)了說話者真心實(shí)意要為對方提供些飲料，或在說話者想得到對方的肯定答復(fù)時(shí)，在疑問句中要用some而不用any.
[誤]Someone want to meet you.
[正]Someone wants to meet you.