1楼：匿名用户
后者正确。当前面已经有s的时候就直接加就ok了，没有就在后面加上s。如， tom's house. toms' house.当然意思是不一样的了。
希望对你有用。
英语中如何使用标点符号？
2楼：乞丐一号
英语标点符号的基本用法：
一.逗号
1.用于
句子中的内容分隔或修饰词间的停顿
2.用于并列名中连词（and,but,or,for,so,nor,yet）前面
3.用于表达日期时的日与年之间
4.用于反意疑问句之前
二.句号
1.用于一句话完全结束时
2.用于表示单词缩写
三.问号
1.用于一个直接的问句后
2.用于特定的问候语后
四.冒号
1.用于正式的引用之前
五.连字号
1.用于某些前缀后
2.用于构成复合词
3.用于同一词的换行
六.撇号
1.构成名词所有格
2.表动词的紧缩
七.双引号
1.用于引出直接引语
八.感叹号
1.用于表感叹和惊叹的陈述中
扩展资料：
英语标点符号在“实战”中经常出现的错误，主要有以下三种类型：
1.对标点符号认识谈薄，使用起来比较随意。如：用中文句号（。）来结束句子；逗号、句号不分，大写、小写不分，乱点一气；在疑问句后也不加问号，或者在间接引语后使用问号。
误用：he came up and asked me what was the matter?
分析：本句为陈述句，所包含的问问是间接引语，自然应当用句号结尾，且要调整语序。
修改：he came up amd asked me what the matter was.
翻译：他上来问我是怎么回事。
2.对句子结构不太理解。中文句号是根据说话都的语意来使用的，即用于一段表达完整的内容之后；而英文中的句号是根据结构来用的，即每一个语法意义完整的句子后用句号。
在习作中这种情况很常见。
误用1：i didn’t go to the party yesterdy.because i had too much homework to do.
分析：此句中，because引出的句子从语法角度看并不完整，而是从属于前面一句（为原因状语从句），因而两句不能用句号隔开。
修改：i didn’t go to the party yesterday.because i had too much homework to do.
翻译：我昨天没去参加聚会，因为我有太多的家庭作业要做。
3.中英文标点符号用法混淆。
误用1：hearing what he said,jack said to himself：“should i believe him?”
分析：作为中英文兼有的标点符号，冒号在中文里常用在“说、道、讲、问、唱、回答、喊、吼”等动词的后边，或用于“比如、例如”等后，而这类情况下英文中只需用逗号表示。
修改：hearing what he said,jack said to himself,“should i believe him?”
翻译：杰克听到他说的话，自言自语道：“我应该相信他吗？“
3楼：灬7紛綉氣灬
1.句号 period [.]
用以表示一个句子的结束：
hockey is a popular sport in canada.
the federal government is based in ottawa.
用在缩写中：
b.c.is the province located on the west coast.
dr.bethune was a canadian who worked in china.
the ***pany is located at 888 bay st.in toronto.
it is 4:00 p.m.in halifax right now.
2.问号 question mark ]
在句子的结尾使用问号表示是直接疑问句：how many provinces are there in canada?
注意：在间接疑问句结尾不要加问号：
the teacher asked the class a question.
do not ask me why.
3.叹号 exclamation mark [!]
在句子的结尾使用叹号表示惊讶、兴奋等情绪：
we won the stanley cup!
the forest is on fire!
4.逗号 ***ma [,]
句子中的停顿：therefore,we should write a letter to the prime minister.
在疑问句中引出说话人："i can ***e today," she said,"but not tomorrow."
排列三个或以上的名词：ontario,quebec,and b.c.are the three biggest provinces.
引出定语从句：emily carr,who was born in 1871,was a great painter.
5.单引号 apostrophe [']
表示所有:this is david's ***puter.
these are the player's things.(things that belong to the player)
note:对于复数形式的名词,只加'
these are the players' things.(things that belong to the players)
缩写i don't know how to fix it.
6.引号quotation marks ["]
直接引出某人说的话：
the prime minister said,"we will win the election."
"i can ***e today," she said,"but not tomorrow."
7.冒号colon [:]
引出一系列名词：there are three positions in hockey:goalie,defense,and forward.
引出一个较长的引语：the prime minister said:"we will fight.
we will not give up.we will win the next election."
8.分号semicolon [;]
将两个相关的句子连接起来：the festival is very popular; people from all over the world visit each year.
和逗号一同使用引出一系列名词：the three biggest cities in canada are toronto,ontario; montreal,quebec; and vancouver,b.c.
9.破折号dash [-]
在一个句子前作总结：mild,wet,and cloudy - these are the characteristics of weather in vancouver.
在一个句子的前面或后面加入额外的注释：the children - pierre,laura,and ashley - went to the store.most canadians - but not all - voted in the last election.
表示某人在说话过程中被打断：the woman said,"i want to ask - " when the earthquake began to shake the room.
10.连字符hyphen [-]
连接两个单词：sweet-**elling; fire-resistant
将前缀：anti-canadian; non-contact
在数字中使用：one-quarter; twenty-three
4楼：一颗糖_两种味
和语文差不多，但不用双引号
英语中的标点符号到底是怎样用
5楼：匿名用户
1.句号 period [.]
用以表示一个句子的结束：
hockey is a popular sport in canada.
the federal government is based in ottawa.
用在缩写中：
b.c.is the province located on the west coast.
dr.bethune was a canadian who worked in china.
the ***pany is located at 888 bay st.in toronto.
it is 4:00 p.m.in halifax right now.
2.问号 question mark ]
在句子的结尾使用问号表示是直接疑问句：how many provinces are there in canada?
注意：在间接疑问句结尾不要加问号：
the teacher asked the class a question.
do not ask me why.
3.叹号 exclamation mark [!]
在句子的结尾使用叹号表示惊讶、兴奋等情绪：
we won the stanley cup!
the forest is on fire!
4.逗号 ***ma [,]
句子中的停顿：therefore,we should write a letter to the prime minister.
在疑问句中引出说话人："i can ***e today," she said,"but not tomorrow."
排列三个或以上的名词：ontario,quebec,and b.c.are the three biggest provinces.
引出定语从句：emily carr,who was born in 1871,was a great painter.
5.单引号 apostrophe [']
表示所有:this is david's ***puter.
these are the player's things.(things that belong to the player)
note:对于复数形式的名词,只加'
these are the players' things.(things that belong to the players)
缩写i don't know how to fix it.
6.引号quotation marks ["]
直接引出某人说的话：
the prime minister said,"we will win the election."
"i can ***e today," she said,"but not tomorrow."
7.冒号colon [:]
引出一系列名词：there are three positions in hockey:goalie,defense,and forward.
引出一个较长的引语：the prime minister said:"we will fight.
we will not give up.we will win the next election."
8.分号semicolon [;]
将两个相关的句子连接起来：the festival is very popular; people from all over the world visit each year.
和逗号一同使用引出一系列名词：the three biggest cities in canada are toronto,ontario; montreal,quebec; and vancouver,b.c.
9.破折号dash [-]
在一个句子前作总结：mild,wet,and cloudy - these are the characteristics of weather in vancouver.
在一个句子的前面或后面加入额外的注释：the children - pierre,laura,and ashley - went to the store.most canadians - but not all - voted in the last election.
表示某人在说话过程中被打断：the woman said,"i want to ask - " when the earthquake began to shake the room.
10.连字符hyphen [-]
连接两个单词：sweet-**elling; fire-resistant
将前缀：anti-canadian; non-contact
在数字中使用：one-quarter; twenty-three
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