初中英语语法专题—数词讲解
数词是指表示数目多少或先后顺序的词。它们分为基数词和序数词两种类型，可以作为名词或形容词使用。
基数词是表示具体数目的词，如one、two、three和fifteen。其中，1到12需要逐个记忆，13到19的基数词是个位数词加上-teen，20到90的基数词是在词尾加上-ty。21到99的非整十基数词需要在整十基数词和个位基数词之间添加连字符“-”。101到XXX的表达方式是“基数词+hundred+and+几十几”，如one XXX和nine XXX。
山茶花什么时候开序数词是表示先后顺序的词，如the first、the cond、the third和the XXX。它们可以作为名词或形容词使用。
需要注意的是，文章中存在明显的格式错误和段落问题，需要进行删除和调整。
To u numbers above 1000.we need to add a comma or a space every three digits from the right。The first comma/XXX "thousand"。the cond reprents "n"。and the third reprents "XXX".
For example。2,002 is read as "two thousand and two"。421,813 is read as "four XXX"。and 52,401,564,789 is read as "o n four hundred and one n five hundred and sixty-four XXX XXX-nine".
Cardinal numbers can n as both nouns and adjectives in a ntence。rving as subjects。objects。predicates。attributive adjectives。and appositives.
For instance。"XXX" and "Three will be enough for us" u cardinal numbers as subjects and "When you are angry。count ten before you speak" and "I saw two of the programs" u them as objects。"I am sixty" and "The n of China is over 1.3 n" u cardinal numbers as predicates while "There are about one hundred teachers in our school" and "There are twenty-six girl students in our class" u them as XXX。"They four went out for a ic last Sunday" XXX.
四、基数词的其他用法感皇恩
1、hundred、thousand、n、XXX的用法
魏延之死
这些数词在表示确切数目时，前面有具体数字时不加-s，也不和of连用，例如：three hundred、five XXX、two n。
心路历程怎么写当表示一个不确定的数目时，前面没有具体数字，要加-s，并与of连用，例如：hundreds of。XXX of。ns of。ns of。
2、基数词表示顺序、编号
基数词表示顺序、编号时，由“单数名词+基数词”构成，此时名词和基数词的第一字母通常大写。例如：I am in Class One。Grade Nine。He lives in Room 302.You can take the No.3 bus。或者 You can take Bus No.3.
3、基数词特殊位置
基数词在句子中有特殊位置，表示在原有基础上“又，再，额外”。一般而言，“another+数词+名词的复数”不带有感情色彩，是中立的，陈述另外还有几个。而“数词+more+名词的复数”指的是还要几个。
例如：I need five more people to do the work。= I need another five people to do the work。I want to read another two books。= I want to read two more books.
4、“整十”的复数形式可表示几十年代或某人几十多岁
例如：In the 1930s、In the 1970s/1970's。
XXX
b岛Other Usages:
One and a half hours" can also be expresd as "one hour and a half".
Every ten days" can mean either every 10 days or every 9 days。XXX.
wifaXXX:
中华人民共和国消防法Ordinal numbers indicate the order or n of something。such as first。cond。third。etc.
The first three ordinal numbers are "first"。"cond"。and "third".
From four to XXX。ordinal numbers are formed by adding "-th" to the corresponding cardinal numbers (e.g。fourth。fifth。sixth。etc.).
XXX。XXX。XXX。XXX。XXX。XXX。XXX。and XXX.彩泥花朵制作
For multiples of ten。the cardinal number is changed to end in "-ty" and the suffix "-th" is added (e.g。twentieth。thirtieth。XXX。etc.).
