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do-does的用法和练习题

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do, does的用法

●do用于当主语是第一人称I, 第二人称you 及复数时(复数包括we, they, these, those及两个以上的人或者事物。

●does 用于当主语是第三人称单数时(第三人称包括she, he, it, this, that,单独的事物或者人名等)。 含有实义动词的句型结构变换 一、肯定陈述句

1. 当主语是I, you及复数时,谓语动词用原型。 Eg. I know it. (Eg.表示例如的意思) They have two volleyballs. Tina and Tom like ice cream.

2. 当主语是第三人称单数时(第三人称包括she, he, it, this, that,单独的事物或者 人名等)。谓语动词要变为第三人称单数形式。特别要注意have—has Eg. She has a set of keys. He knows my name.

Tom needs a computer game. 二、肯定陈述句变换成否定陈述句

1. 当主语是I, you及复数时,在谓语动词前加do not don’t Eg. I don’t know it.

They don’t have two volleyballs. Tina and Tom don’t like ice cream.

2. 当主语是第三人称单数时,在谓语动词前加does not = doesn’t, 谓语动词打回原型

Eg. She doesn’t have a set of keys. He doesn’t know my name.

Tom doesn’t need a computer game.

三、肯定陈述句变换成一般疑问句采用“一加二变三问号”。 一加:

当主语是I, you及复数时,在句子开头加do;

当主语是第三人称单数时(第三人称包括she, he, it, this, that,单独的事物或者人名等), 在句子开头加does; 二变:

变大小写;

第一人称变为第二人称(I / we变为you, my / our变为 your); 当主语是第三人称单数时,谓语动词要打回原型。 三问号:

在句末加问号。

肯定回答;Yes, 主语 + do/ does.

否定回答:No, 主语+don’t / doesn’t . (主语要用相应的人称代词主格) Eg. Do you know it? Yes, I do. / No, I don’t . Do they have two volleyballs? Yes, they do. / No, they don’t .

Do Tina and Tom like ice cream? Yes, they do. / No, they don’t.

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Does she have a set of keys? Yes, she does. / No, she doesn’t.

Does he know your name? Yes, he does. /No, he doesn’t.

四、肯定陈述句变换成特殊疑问句(对画线部分提问) 特殊疑问词 + 一般疑问句?(去掉画线部分)

Eg. They have two volleyballs. ------------What do they have? He knows my name. -------------What does he know? Exercise1 :

把下列句子变成否定句,一般疑问句并做出肯否定回答,并对划线部分提问。 1.I know the answer. 否定句: I (know)the answer.

一般疑问句: you (know) he answer? 回答: ,I .

否定回答: , I . 对划线部分提问:

2 He plays soccer every day.

否定句: He (play) soccer every day.

一般疑问句: he (play) soccer every day? 肯定回答: , He .

否定回答: , He . 3.The books are on the teachers’ desk. 否定句: The books (be) on the teachers’ desk 对划线部分提问: are the books?

Exercise21ﻫ.I go to Beijin(一般疑问句) ______ ______ __________ to Beijin? 2.We can see some birds.(一般疑问句)

______ ______ see __any_ birds?(any用在疑问句中,而some用在陈述句中)

3.He likes apples.(一般疑问句)

______ he ________ apples?ﻫ4.Here are some bananas on the teachers’ desk.(一般疑问句)

______ ______ ______ flowers on the teachers’ desk? 5.There are some apples on the tree.(否定句)

There ______ ______ __any__ apples on the tree.(any用在疑问句中,而some用在陈述句中)6ﻫ he is very old.(否定句) he ______ very old. 7. It is green.(否定句) ______ ______ green.

8.I have some hot dogs.热狗(一般疑问句)

_______ __you_ ______ __any_ __hot__ dogs ?.

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11.My pencils are in the pencil-box.(对划线部分提问) ______ ______ your pencils

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