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英语be动词的一般现在时

作者: admin来源: 网络文章 时间: 2021-03-02

一般现在时表示经常、习惯性发生的动作。be动词的一般现在时有am,is,are三种形式,由主语的人称和数来决定用哪一种。

be动词一般现在时的否定句

句型:主语+be动词的一般现在时(am,is,are)+not+…,例:

肯定句:I am afraid of dogs.

否定句:I am not afraid of dogs.

肯定句:She is a good teacher.

否定句:She is not a good teacher.

肯定句:They are in the park.

否定句:They are not in the park.

一般疑问句的结构

句型:Be动词的一般现在时(Am/Is/Are)+主语+…..?,例:

1. Am I flying a kite? Yes, you are. / No, you aren't

2. Is she reading books? Yes, she is. / No, she isn't

3. Are they doing their homework? Yes, they are. / No, they aren't

一般疑问句的回答

在回答由be动词构成的一般疑问句时,要用Yes或No,句型如下:

肯定回答Yes, 主语+be动词 否定回答No, 主语+be动词+not,例:

A: Is your key on the table? B: Yes, it is. / No, it isn't

A: Are you at home? B: Yes, I am. / No, I'm not.

be动词一般现在时的特殊疑问句

1.特殊疑问句的结构,句型:疑问句+be动词+主语+….? 例:

What is this? 这是什么?

What are they? 他们是干什么的?

Who is he? 他是谁?

2.特殊疑问句的回答,特殊疑问句不能用yes或no来回答。回答时,be动词要视主语的情况而决定用am,is或are。例:

What is the time now? 现在几点了?

It is 7 o'clock. 7点钟了。

There be句型

There is a school there. (那里有一所学校。)

1.There be句型的用法:

There be句型表示“某地(场所)有/存在某物”,它的基本用法见下表:

主语 句型

单数可数名词 There is+单数可数名词+表示场所的词或短语

不可数名词 There is+不可数名词+表示场所的词或短语

复数名词 There are+复数名词+表示场所的词或短语

例:

There is a pineapple there. (那儿有一个菠萝。)

There is some juice in the cup. (杯子里还有一些果汁。)

There are many eggs in the kitchen. (厨房里有很多鸡蛋。)

2.There be句型的否定句与疑问句:

There be句型的否定句是在be的后面加not。例:

There is not a computer on the desk. (桌子上没有电脑。)

There are not any students in the playground. (操场上没有学生。)

There be句型的一般疑问句是将be调到there的前面。例:

Is there a computer on the desk? (桌子上有电脑吗?)

Are there any students in the playground? (操场上有学生吗?)

3.There be句型的特殊疑问句是在其一般疑问句前加相应的疑问词。例:

A:How much water is there in the bottle? (墨水瓶里有多少墨水?)

B:There is a little. (有一点儿了)

A:How many people are there in your family? (你们家有几口人?)

B:There are five. (有五口人)

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