小学be动词的用法及助动词-do

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传播优秀Word版文档 ,希望对您有帮助,可双击去除! 1 / 11 1. 由连系am,is,are构成的句子:变一般疑问句时把am,is,are提到句子的前面,句尾用问号即可。变否定句时直接在am,is,are后面加not即可。例如: 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 反问句: He is a student, isn't he? He isn't a student, is he? 画线提问: 对he提问: Who is a student? 对 a student 提问: What is he? or What does he do? 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 反问句: She can swim, can't she? She can not swim, can she? 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 例如: 肯定句: They play football after school. 一般疑问句: Do they play football after school? 否定句: They don't (do not) play football after school. 反问句: They play football after school, don't they? They don't play football after school, do they? 画线提问: 对they提问: Who play football after school? 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 2 / 11 对play football提问: What do they do after school? 对after school提问: When do they play football? 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 1. 由连系am,is,are构成的句子:变一般疑问句时把am,is,are提到句子的前面,句尾用问号即可。变否定句时直接在am,is,are后面加not即可。例如: 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 反问句: He is a student, isn't he? He isn't a student, is he? 画线提问: 对he提问: Who is a student? 对 a student 提问: What is he? or What does he do? 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 反问句: She can swim, can't she? She can not swim, can she? 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 例如: 肯定句: They play football after school. 一般疑问句: Do they play football after school? 否定句: They don't (do not) play football after school. 反问句: They play football after school, don't they? They don't play football after school, do they? 画线提问: 对they提问: Who play football after school? 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 对play football提问: What do they do after school? 对after school提问: When do they play football? 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 根据句后括号内的要求,填入句中所缺的词: 1.I know the answer.(一般疑问句) ______ ______ know the answer? 2.We can see some birds.(一般疑问句) ______ ______ see ______ birds? 3.There is a computer in my house.(一般疑问句) ______ ______ a computer in house? 4.There are some flowers on the teachers’desk.(一般疑问句) ______ ______ ______ flowers on the teachers’desk? 5.There are some apples on the tree.(否定式) There ______ ______ ______ apples on the tree. 6.I think he is very old.(否定句) I ______ think he ______ very old. 7.Please colour it green.(否定句) ______ ______ colour it green. 8.We can speak good English.(变否定句) We ______ ______ speak good English. 9.Thank you for helping me.(同义句) Thank you for ______ ______ . 10.There aren’t any pears in thebox.(同义句) There are ______ pears in the box. 11.Whose are these clothes?(同义句) ______ ______ are these? 12.Let me look at your book.(同义句) Let me ______ ______ ______ ______ your book. 13.Her sweater is red.(对划线部分提问) 传播优秀Word版文档 ,希望对您有帮助,可双击去除! ______ ______ is her sweater? 14.My pencils are in the pencil-box.(对划线部分提问) ______ ______ your pencils? 15.I get up at six every day.(对划线部分提问) 传播优秀Word版文档 ,希望对您有帮助,可双击去除! ______ ______ do you get up every day? 16.There are fifty students in my class.(对划线部分提问) ______ ______ students are there in your class? 17.These are cars.(用buses改写成选择疑问句) Are these cars______ ______ ? 18.The book is in my schoolbag.(变否定疑问句) ______ the book in your school-bag? 19.Two boys are in our house.(改为there be句型) ______ ______ two boys in our house. 20.Can’t you find the map?(作肯定回答) ______ ,I______ . 传播优秀Word版文档 ,希望对您有帮助,可双击去除! 参考答案: 1.Do you 2.Can you,any 3.Is there,your 4.Are there any 5.are not any 6.don’t,is 7.Please don’t 8.can not 9.your help 10.no 11.Whose clothes 12.have a look at 13.What colour 14.Where are 15.What time 16.How many 17.or buses 18.Isn’t 19.There are 20.Yes,can 一、变否定句时相关词的改变

肯定句变否定句时,除将谓语变为否定式外,句中其他词语也可能随之改变,如将some改为any,too和also改为either,already改为yet,and改为or等:

There are some birds in the tree. 树上有些鸟。 →There aren’t any birds in the tree. 树上没有鸟。 He likes the girl, too. 他也喜欢这个女孩。 →He doesn’t like the girl, either. 他也不喜欢这个女孩。 We have already seen the film. 我们已看过这部电影。 →We have not seen the film yet. 我们没有看这部电影。 He likes singing and dancing. 他喜欢唱歌和跳舞。 →He doesn’t like singing or dancing. 他不喜欢唱歌也不喜欢跳舞。 二、不变谓语动词而变其他词语 有时将肯定句变为否定句时,不改变谓语而改变其他词语: Both of us went there. 我们两人都去了那儿。