您可能应用限定词时有误，或省略掉了限定词。您可能受到此错误信息，因为您使用冠词或限定词时有误，或在文章内省略掉了您的冠词。以下的规则和解释告诉您，在做英文写作时，您如何正确使用冠词。
冠词是什麽？:
A, an, 和 the 被称冠词或限定词。修饰词语告诉我们有多少个或哪几个。例如：
• a thinker
• an apple
• the house
• a car
• an old house
• the newspapers
• an apple
• the house
• a car
• an old house
• the newspapers
英语有两种冠词。A 和 an 是所谓的不定冠词。The 是定冠词。
何时使用 "a/an"：
当名词指的是一组人、事、物里的其中一员时，把 a 或 an 用在单数名词前。例如：
James must write an essay for his writing class today.
A newspaper is a good source of information on current events.
如果跟在冠词后的名词或限定词是以子音开头，您应该使用 a 为冠词：
• a basketball
• a new automobile
但是，若该名词或限定词是以母音（a, e, i, o, u）开头，您应该使用an 为冠词：
• an elephant
• an old automobile
• an old automobile
A/An 只用在可数名词前。例如：
I received a letter from my sister.
Sending an email is a fast way to communicate with classmates.
Sending an email is a fast way to communicate with classmates.
有时候名词或限定词可以是以母音字母开头，但非母音发音。例如：
This will be a one-time charge to your account.
何时使用"the"：
当指定的名词是一个特定的名词时，您应该使用the 在该名词前（无论是单数或复数）。如果您可以回答“是哪一个？”，使用the 为冠词。例如：
The art class that I want to take is taught by a famous painter.
The students in Mrs. Jones' class do not want to participate in the debate.
此外， the 可以用在下列等方式：
• To refer to things known to everyone. For example: the sun, the stars, etc.
• To refer to things that are unique. For example: the White House
• To refer to time. For example: the past, the present, the future
• To refer to things that are unique. For example: the White House
• To refer to time. For example: the past, the present, the future
何时不该使用冠词：
A/An 不可使用在不可数名词的前面。例如：
I like to drink milk. (牛奶是不可数的)
若牛奶的计量单位有被特定指出来的话，那就可以使用此冠词。例如：
I like to drink a glass of milk before I go to bed.
用来代表抽象概念的名词（如 anger, beauty, love, poverty, employment）通常不能使用a 或 an 。例如：
Love is a difficult emotion to describe in words.
Money alone cannot buy happiness.
当复数名词为笼统的复数名词时，the 不会被使用。例如:
Computers are helpful tools for student writers. (Computers 笼统地表达“电脑”这一概念，而非特定的电脑。)
The computers in that classroom are used for writing class. (computers 指的是特定一组的电脑。)
其它冠词错误：I like to drink milk. (牛奶是不可数的)
若牛奶的计量单位有被特定指出来的话，那就可以使用此冠词。例如：
I like to drink a glass of milk before I go to bed.
用来代表抽象概念的名词（如 anger, beauty, love, poverty, employment）通常不能使用a 或 an 。例如：
Love is a difficult emotion to describe in words.
Money alone cannot buy happiness.
当复数名词为笼统的复数名词时，the 不会被使用。例如:
Computers are helpful tools for student writers. (Computers 笼统地表达“电脑”这一概念，而非特定的电脑。)
The computers in that classroom are used for writing class. (computers 指的是特定一组的电脑。)
有时候词型变化将会把错误鑑定为冠词错误。例如：
不正确: I would buy a house for those reason.
不正确: This kinds of technology will affect people's behavior.
不正确: This kinds of technology will affect people's behavior.
正如一个不定冠词变换跟在其后的名词，如上面的例子，诸如 this 和 those 等字描述跟在其后的名词，明确指出是哪一个。在这些例子中，形容词跟它们描述的名词在数量上不相等。
This 和 that 描述单数名词。These 和 those 描述复数名词。例如:
正确: I would buy that house for these reasons.
正确: This kind of technology will affect people's behavior.
正确: This kind of technology will affect people's behavior.
如果您不太能了解如何使用冠词或限定词，您可以请教您的指导教师。
使用图尼丁，进行论文查重，图尼丁系统基于：Turnitin CrossCheck ' Thenticate,适用于：毕业论文、留学生Essay、外文投稿，免费赠送检测码以及语法报告，并支持开设电子发票。
