類型:英語語法
時間:2023-06-29
點擊量1251
一般現(xiàn)在時表示經(jīng)常、習(xí)慣性發(fā)生的動作。be動詞的一般現(xiàn)在時有am,is,are三種形式,由主語的人稱和數(shù)來決定用哪一種。
be動詞一般現(xiàn)在時的否定句 句型:主語+be動詞的一般現(xiàn)在時(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.
一般疑問句的結(jié)構(gòu) 句型:Be動詞的一般現(xiàn)在時(Am/Is/Are)+主語+…..?,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
一般疑問句的回答 在回答由be動詞構(gòu)成的一般疑問句時,要用Yes或No,句型如下:
肯定回答Yes, 主語+be動詞 否定回答No, 主語+be動詞+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動詞一般現(xiàn)在時的特殊疑問句 1.特殊疑問句的結(jié)構(gòu),句型:疑問句+be動詞+主語+….? 例:
What is this? 這是什么?
What are they? 他們是干什么的?
Who is he? 他是誰?
2.特殊疑問句的回答,特殊疑問句不能用yes或no來回答。回答時,be動詞要視主語的情況而決定用am,is或are。例:
What is the time now? 現(xiàn)在幾點了?
It is 7 o’clock. 7點鐘了。
There be句型 There is a
school there. (那里有一所學(xué)校。)
1.There be句型的用法:
There be句型表示“某地(場所)有/存在某物”,它的基本用法見下表:
主語 句型
單數(shù)可數(shù)名詞 There is+單數(shù)可數(shù)名詞+表示場所的詞或短語
不可數(shù)名詞 There is+不可數(shù)名詞+表示場所的詞或短語
復(fù)數(shù)名詞 There are+復(fù)數(shù)名詞+表示場所的詞或短語
例:
There is a
pineapple there. (那兒有一個菠蘿。)
There is some
juice in the cup. (杯子里還有一些果汁。)
There are many eggs in the
kitchen. (廚房里有很多雞蛋。)
2.There be句型的否定句與疑問句:
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. (桌子上沒有電腦。)
There are not any
students in the
playground. (操場上沒有學(xué)生。)
There be句型的一般疑問句是將be調(diào)到there的前面。例:
Is there a computer on the desk? (桌子上有電腦嗎?)
Are there any students in the playground? (操場上有學(xué)生嗎?)
3.There be句型的特殊疑問句是在其一般疑問句前加相應(yīng)的疑問詞。例:
A:How much
water is there in the
bottle? (墨水瓶里有多少墨水?)
B:There is a
little. (有一點兒了)
A:How many
people are there in your
family? (你們家有幾口人?)
B:There are five. (有五口人)
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