问一般现在时,现在进行时,一般过去时,的肯定,否定,疑问,特殊疑问的结构.方便的每个结构造一个句!
1. 一般现在时: 动词用原型.主语为第三人称单数时,谓语动词加“s”.
肯定 The Moon goes around the Earth.
否定 The Earth doesn't go around the Moon.
疑问 Does the Moon go around the Earth?
特殊疑问 What does the Moon go around?
2. 现在进行时: be (am, is, are, was, were) + doing
肯定 The girls are playing basketball.
否定 The girls are not playing basketball.
疑问 Are the girls playing basketball?
特殊疑问 What are the girls doing?
一般过去时: 谓语动词要用动词的过去式
肯定 They went to Beijing.
否定 They didn't go to Beijing.
疑问 Did they go to Beijing?
特殊疑问 Where did they go?