知识点1:英文标点符号使用详解
英语中，逗号是最常用的标点符号，表示最短的停顿。主要作用是：
1. 用于表示并列的词语、结构或句子之间，如：
He came in, took his bag, and then hurried away. 他进来，拿起他的包，然后匆匆离去了。
You, he and I should help one another. 我、你、他应该互相帮助。
2. 不属于句子组成成分的词或词组，如称呼语，插入语，well、yes、no 等，须用逗号与句子的其他成分隔开。如：[1]well单词记忆法

◆记忆方法一：联想方式：we-（我们）；ll-（一一）记忆方法：我们一一做好它。

Tom, take care! 汤姆，当心！
No, I don’t think so. 不，我认为不是这样。
3. 状语或状语从句置于句首时，须用逗号把它和其他成分或主句隔开。如：
On July 2, 1995, I graduated and found a teaching job in a college. 1995年7月2日，我毕业了，在一家大学找到了一份教书的工作。
If it rains tomorrow, our party will have to be put off. 如果明天下雨，我们的晚会就得推迟。[2]have to,have,相关知识点

have go还是have to gohave go还是have to go请看下面的题，是选have go还是have to go?Whom would you rather _________ with you, Jim or Jack?A. have go B. have to go C. have gone D. has to go有的同学从一看选项便首先排除了A，认为

4. 用于分隔日期、数字或地点。如：
He began to learn English on May 20, 2000. 他于2000年5月20日开始学英语。
Her room is at No.15, Renmin Road, Beijing. 她的房间在北京市人民路15号。
5. 用于分开的直接引语或直接引语的第一部分和引介语的后面。如：
He said, “I came back yesterday.” 他说：“我是昨天回来的。”[3]back,came,相关知识点

在状语从句中要用一般时来表示将来，如：I should tell him when he came back. ［误］ I'll come to see you as soon as I'll be back. ［正］ I'll come to see you as soon as I am back. ［析］ 在状语从句中要用一般时来表示将来，如：I should tell

“My younger brother,” she said, “has read this book.” 她说：“我的弟弟已看过这本书。”
6. 用于分隔称呼语。如：
Yes, Mum. 是的，妈妈。
Would you mind if I smoke, Kate? 我抽烟你会介意吗，凯特？
7. 用于信件的称呼语之后或结束敬语之后。如：
Dear Mother, 亲爱的母亲：
Yours sincerely, 谨启(用于信件署名前)

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知识点2:英语常见标点符号的英语单词
question mark（问号）——?
quotation marks（引号————“”
semicolons（分号）——;
slash（斜杠）——/
square brackets（方括号）——[ ]

知识点3:英语标点符号用法(英文版)
John’s truck, a red Chevrolet, needs new tires.
When he realized he had overslept, Matt rushed to his car and hurried to work.[4]realize单词记忆法

◆记忆方法一：联想方式：real真的；ize爱国者真的爱国者要努力实现国泰民安的理想◆记忆方法二：谐音：胃癌来自 他认识到胃癌来自饮食不当。◆记忆方法三：分析：re――“热”的拼音；a―― 一个；li――“梨”的拼音；z――外形像数字 2；e―― “鹅”的拼音； 记忆方法：我认识到，加热一个梨分给两只鹅吃，这是远远不够的。◆记忆方法四：联想方式：real真的；iz

Use a comma between coordinate adjectives (adjectives that are equal and reversible).
The irritable, fidgety crowd waited impatiently for the rally speeches to begin.
The sturdy, compact suitcase made a perfect gift.
Use a comma after a transitional element (however, therefore, nonetheless, also, otherwise, finally, instead, thus, of course, above all, for example, in other words, as a result, on the other hand, in conclusion, in addition)
For example, the Red Sox, Yankees, and Indians are popular baseball teams.
If you really want to get a good grade this semester, however, you must complete all assignments, attend class, and study your notes.[5]assignment单词记忆法

◆记忆方法一：谐音：阿三瞒他 阿三瞒他作业情况。◆记忆方法二：词根词缀记忆法：assignment n 分配；指定（assign+ment）,Sign=mark,表示“记号，信号”

Use a comma with quoted words.
“Yes,” she promised. Todd replied, saying, “I will be back this afternoon.”
Use a comma in a date.
October 25, 1999
Monday, October 25, 1999
25 October 1999
Use a comma in a number.
15,000,000
1614 High Street
Use a comma in a personal title.
Pam Smith, MD
Mike Rose, Chief Financial Officer for Operations, reported the quarter’s earnings.
Use a comma to separate a city name from the state.
West Lafayette, Indiana
Dallas, Texas
Avoid comma splices (two independent clauses joined only by a comma). Instead, separate the clauses with a period, with a comma followed by a coordinating conjunction, or with a semicolon.

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