(
课件网) 1. be 动词： 3.助动词： 2.情态动词： 4.行为动词： run , laugh ... am , is , are , was , were does，do , did , will ,have, has.. must , can , could , may , might , should ,will , would ... 1.肯定句 2.否定句 Declative sentence positive sentence negative sentence 陈述句按动词的分类分为四种： 1.含有be 动词的陈述句 Lily’s father is a doctor . They were playing computer games . The bridge was built last year . 变成否定句： Lily’s father is not a doctor . They were not playing computer games ; The bridge was not built last year . 变成一般疑问句，以及肯定答语、否定答语： Is Lily’s father a doctor Yes , he is ./No, he isn’t . Were they playing computer games Yes , they were ./ No, they weren't . Was the bridge built last year Yes , it was ./ No, it wasn’t . 一、当陈述句子里面含有be 动词； 变成否定句时_____； 变成一般疑问句时， 把_____提前即可; 在be动词后面直接加not 把be动词 I can play the guitar . We must obey the school rules . Teenagers should be allowed to drive. 2. 含有情态动词的陈述句; 变成否定句： I can not play the guitar . We must not obey the school rules . Teenagers should not be allowed to drive . 变成一般疑问句： Can you play the guitar Yes , I can . / No , I can't . Must we obey the school rules Yes , you must . / No , you needn't . Should teenages be allowed to drive Yes , they should ./ No, they shouldn't . 陈述句里含有情态动词could /can ...的陈述句： 变成否定句时 _____ ； 变成一般疑问句时， 把_____ 提前即可； 在情态动词后直接加not 把情态动词 1. Lily likes to watch TV every day . 2. You look beautiful today . 3. They did a lot of homework yesterday . 3. 只含有行为动词的陈述句； 变成否定句 1. Lily doesn't like to watch TV every day . 2. You don't look beautiful today . 3. They didn't do a lot of homework yesterday . 变成一般疑问句： 1. Does Lily like to watch TV every day Yes , she does . / No, she doesn't . 2. Do You look beautiful today Yes , I do . / No, I don't . 3. Did they do a lot of homework yesterday Yes , they did . / No , they didn't . 当陈述句中的谓语动词只有行为动词充当时，变成否定句需要在行为动词前加上 _____;同时要把行为动词_____即可； 变成一般疑问句需要_____ 来帮忙， 助动词放在句首，同时要把行为动词还原成_____即可。 don't , doesn't , didn't 还原 助动词do , does , did 原形 4. 含有have /has + done ...的陈述句：（现在完成时） She has kept the books for two weeks . I have been to Thailand twice . 变成否定句： She has not kept the books for two weeks . I have not been to Thailand twice . 变成一般疑问句： Has she kept the books for two weeks Yes , she has . / No, she hasn't . Have you been to Thailand twice Yes , I have . / No, I haven't . 在现在完成时的句型中即: 主语+have / has +p.p +...的陈述句；变成否定句时，在_____; 变成一般疑问句时，把_____ 提前即可。 have /has 后直接加not Have / Has 1.They are going to the Great Wall .（改为否定句） They ____ _____ to the Great Wall . 2.There must be something wrong with my computer .（改为一般疑问句） _____ there be _____ w ... ...
