冒号（ ：）
(1) 用在解释或逐项列举之前(在as follows,
given below之后)。 (a) I bought the following articles: sheets, towels, and blankets． (b) The table lamp consists of three parts: a stand, a bulb, and a shade.
(2) 用以强调同位语. She has only one interest—food
.
连字句(-)
(1) 用以表示分数或连接由21至99中的十位数
及个位数。 (a) Three-fourths of the freshman students are girls. (b) There are twenty-two boy student and ninety-eight girl students in the Department of English.
(9)用在such as及especially的前面。 (a) They enjoy outdoor sports, such as hiking
and riding. (b) He likes all extracurricular activities, especially basketball playing.
破折号(—)
(1) 表示犹豫，句意的暂时中断, 或思想的突然
中断。 (a) I—I don’t know. You’d better ask her. (b) The entire teaching facilities—console, tapes, earphones, and tape recorders—were stolen last night. (c) I’ll give—let’s see, what can I give?
字之后。 (a) Prof. W. W. Wang has returned to Taipei. (b) Dr. Tang earned his Ph. D. degree from Georgetown University in Washington, D. C. (District of Columbia).
He is a good student（） Let’s go to the cinema（） Are you a student（）
Open the door（）would you（）
His favourite foods are as follows（） apple
pie（）fruit juice（）and chocolate（） In his most famous speech（）he said（）all men are created equal and must enjoy the equal rights that are given by God（）
(consequently, however, moreover, nevertheless, so, still, then, therefore, thus, etc.)之前。 He did not pass the examination; therefore, he was unhappy.
练习： He came in（） took his bag（）and then
hurried away（） You（）he and I should help one another（） Tom（） take care（） No（）I don’t think so（） If it rains tomorrow（） our party will have to be put off（）
(2) 用在连接两个主要子句的连接词 (and, but,
or, nor, for)之前，当主要子句本身有逗号时。 Henry, a freshman, lives at home; but Karl, his brother, does not.
(3) 用在连接两个主要子句的连接副词

(7) 用以分开星期，月日，年份。 On Sunday, May 28, 1989, her first child was
born. (8)用以分开一系列的单字，词组或子句。 (a) Her mother sells tomatoes, potatoes, and peaches. (b) She ran up the stairs, across the porch, and went into the house.
Give your secretary what she needs（）
pencil()paper and a good typewriter()
Байду номын сангаас
(b) Turn in your papers, please. (c) Will you please send me a copy of your university catalogue.
(2) 用在间接问句之后。 She asked if you would come to her birthday party. (3) 用在缩写名字和其它字的第一个字母之后，或缩写
分号（；）
(1) 用以连接两个或两个以上的主要子句。 (a) The singular form is mouse; the plural
form is mice. (b) she made up her mind; she laid her plans; she began her trip.
括号( )
用来在句中附加评论或解释。 I saw the two students (they are lovers),
kissing each other.
句号( . )
(1) 用在叙述句，祈使句及礼貌问句之后。 (a) I wish to enter an ideal university.
如何使用英文标点符号
逗号(，)
(1) 用在以and ,but ,for, nor ,or ,so ,yet等连接
词连接的两个主要子句之间。 My father is fond of fishing, but my mother prefers hiking. (2) 在复合句中，如果从句在前，主要子句在 后，用在附属子句之后。 While I was making a telephone call, someone knocked at my door．
(2) 用在正式或事务信函中称谓之后。
Dear Sir: Dear Mr. Reagan: Gentlemen: 注意:在非正式或交际信函中称谓之后用 逗号。 Dear Mary, Dear John,
(3) 用在讲释第一个主要子句的第二个主要句
子之前. Her intention is obvious: she wants to marry him.
(5) 用在yes, no ,well等字之后。 (a) Yes, he is a hard-working student. (b) No, it is impossible. (c) Well, you may go if you insist. (6) 向人说话时，用在对方名字或称谓之后， 之前或前后. (a) John, come here. (b) Open the door, John. (c) It is, Sir, not my fault
(3) 用以分开非限制形容词子句与主要子句。 Her father, who is a famous scholar, teaches
English. (4) 用以分开非限制同位语。 Kent Howard, my English teacher, is from America.