英语中逗号用法也有大讲究 英文逗号

英文逗号 英语中逗号用法也有大讲究
大家知道吗？英语中逗号 comma的使用可是很重要的，说不定还能救人一命：

英语中如果没用对逗号的话，会让你看起来很没文化哦。下面来讲解一下英语中逗号的正确用法。
1.用在连词前面
连词：and, but, for, or, nor, yet, so
例句：I went running, and I saw a duck.
2.用在从句后面
例句：When I went running, I saw a duck.
3.分隔同位语
例句：A mallard, a kind of duck, attacked me.
4.分隔一系列的物品
例句：I saw a duck, a magician, a liquor store when I went running.
5.用在引导性副词后面
例句：Unsurprisingly, I saw a duck when I went running.
6.用在引号前面
例句：The duck said, “Quack!”
7.分隔地址中的各部分
例句：Cleveland, Ohio, is known for their duck population.
8.分隔日期中的各部分
例句：Friday, January 13th, 2017, will be rubber duckie day.
9.用在句子开头独立的Yes或No后面
例句：Yes, the duck bite me.
10.直接称呼某人或某物时
例句：“Duck, do you mind?”
11.用在修饰同一个名词的两个形容词之间
例句：I saw the big, mean duck when I went running.
12.分隔否定句
例句：I saw a duck, not a baby seal, when I went running.
13.数字中每三位数就要用逗号分隔开
例句：The duck had over 10,000 friends.
除了逗号，英语中还有很多其它标点符号，你都会用英语来表达它们吗？
plus 加号；正号
- minus 减号；负号
plus or minus 正负号
is multiplied by 乘号
is p>
＝ is equal to 等于号
≠ is not equal to 不等于号
≡ is equivalent to 全等于号
≌ is equal to or approximately equal to 等于或约等于号
≈ is approximately equal to 约等于号
＜ is less than 小于号
＞ is greater than 大于号
≤ is not less than 不小于号
≥ is not more than 不大于号
≢ is less than or equal to 小于或等于号