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1、助动词包括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
2、 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。P98 特别要注意have—hasEg. 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
3、’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: l 当主语是I, you及复数时,在句子开头加do;
4、 l 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: l 变大小写; l 第一人称变为第二人称(I / we变为you, my / our变为 your); l 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.
5、/ No, I don’t . Do they have two volleyballs? Yes, they do. / No, they don’t . DoTina andTom like ice cream? Yes, they do./No, they don’t. 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
6、’t. Does Tom need a computer game? 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
7、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? 肯定回答: ,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)
8、soccer every day? 肯定回答:,He. 否定回答: ,He. 3.The