动词“be”是什么?
动词 be 在英语中非常常见。它能帮助你描述事物和人物,还能告诉你事物的位置。.
试想一下 be 就像西班牙语中的“ser”和“estar”一样。英语仅用一个动词就表达了这两种含义。.
在肯定句中,我们如何使用“be”?
动词 be 其形式随主语而变化。一般现在时有三种形式:
- 我们使用 am 与 I.
- 例如 I am happy.
- 我们使用 is 与 he, she, it, ,以及单数名词(指一个人、一件东西)。.
- 例如 He is a student.
- 例如 It is cold.
- 我们使用 are 与 you, we, they, ,以及复数名词(指两人以上、两样以上的事物)。.
- 例如 You are kind.
- 例如 They are friends.
在否定句中,我们如何使用“be”?
要使一个句子变成否定句,我们需要加上 not 在动词之后 be.
- 使用 I: am not
- 例如 I am not sad.
- 使用 he, she, it: is not
- 例如 She is not from Spain.
- 使用 you, we, they: are not
- 例如 We are not tired.
“be”的缩写形式是什么?
在口语和非正式写作中,我们经常使用缩写。缩写是单词的简写形式。.
- 对于肯定句:
- I am 变成 I'm (例如,, I'm a student.)
- He is 变成 He's (例如,, He's tall.)
- She is 变成 She's (例如,, She's my sister.)
- It is 变成 It's (例如,, It's sunny.)
- You are 变成 You're (例如,, You're welcome.)
- We are 变成 We're (例如,, We're friends.)
- They are 变成 They're (例如,, They're at home.)
- 对于否定句:
- I am not 变成 I'm not (例如,, I'm not hungry.)
- He is not 变成 He isn't 或 He's not (例如,, He isn't here. 或 He's not here.)
- She is not 变成 She isn't 或 She's not
- It is not 变成 It isn't 或 It's not
- You are not 变成 You aren't 或 You're not (例如,, You aren't right. 或 You're not right.)
- We are not 变成 We aren't 或 We're not
- They are not 变成 They aren't 或 They're not
什么时候使用动词“be”?
我们使用 be 适用于许多场合。以下是一些常见用途:
- 谈谈身份或名字:
- I am Maria.
- He is a doctor.
- 谈谈年龄:
- She is ten years old.
- They are 25.
- 谈论感受或描述时:
- We are happy.
- It is a big house.
- 关于地点:
- You are at home.
- The book is on the table.
| 主题 | 肯定式 | 否定形式 | 正收缩 | 否定缩略 |
|---|---|---|---|---|
| I | am | am not | I'm | I'm not |
| He / She / It | is | is not | He's / She's / It's | isn't / He's not / She's not / It's not |
| You / We / They | are | are not | You're / We're / They're | aren't / You're not / We're not / They're not |
示例
- I am a student.
- He is my brother.
- She is happy.
- It is a cat.
- You are tall.
- We are friends.
- They are in the park.
- I am not tired.
- He isn't here.
- They aren't sad.
练习
西班牙语母语者常犯的错误
说西班牙语的人有时会在使用以下词时犯这些错误: be:
- 使用 have 适用年龄: 在西班牙语中,人们会说"Tengo X años"。在英语中,我们则使用 be.
- 错误: I have 10 years.
- 右: I am 10 years old.
- 漏写主语代词: 在西班牙语中,主语通常可以省略(例如,"Es feliz")。而在英语中,句子中必须有主语。.
- 错误: Is happy.
- 右: He is happy. 或 She is happy.
- 令人困惑 ser 和 estar: 请记住,英语中只使用 be 两者皆是。.
- 西班牙语:"Soy alto"(ser)和"Estoy cansado"(estar)。.
- 英语: I am tall. 和 I am tired.
常见问题
“be”动词的三个现在时形式是什么?
目前的三种形式是 am, is, , 和 are.
我该怎么说“我呈阴性”?
你添加 not: I am not 或 I'm not.
我可以使用“isn't”和“is not”吗?
是的,, isn't is a contraction for is not. Both are correct, but isn't is more common in speaking.
When do I use is?
You use is with singular subjects like he, she, it, or one person/thing (e.g., The dog is big.).





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