类型:英语语法
时间:2023-06-29
点击量736
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)
更多文章