be动词和助动词句式.doc

1. be动词（am/is/are）主语 be动词（原形） be动词（过去式）I am was He/she/it is wasWe/you/they are were口诀：我用am, 你用are，is用在他她它，所有复数全用are肯定和否定句 I am (not) from London. He is(not) a teacher. She is(not) in the dining room. My hair is(not) long. Her eyes are(not) small.一般疑问句 Am I a Chinese?Yes, you are. /No, you arent. Is the cat fat? Yes, it is. /No, it isnt.Are they American? Yes, they are. /No, they arent.表示疑问，一般回答只有两种可能Yes或No，句中没有疑问词。如何将一个肯定的陈述句改为否定句：1、看句中有无be动词，如有，把be动词提到句首即可。2、看句中有无情态动词，如有，把情态动词提到句首即可。3、如上述二者都没有，就应把助动提到句首。分四个步骤：（1）肯定陈述句中本来是没有助动词的，要加上去，位置在主语（某人/某物）后，动词前。（2）确定助动词用do、does还是did，根据句中动词，动词是原形的助动词就用do，动词是第三人称单数的助动词就用does，动词用过去式的助动词就有did。（3）把助动词后提到句首。（4）原句中动词假如发生变化就要恢复成原形。有some的要考虑是否要用any2. 助动词（do/does/did）主语 助动词（原形） 助动词（过去式） 否定形式I/We/you/they do did dont/didntHe/she/it does did doesnt/didnt.Do+非第三人称单数动词原形? do/dont you/they have.?Yes, I do/No, I dont.Does+第三人称单数动词原形?does/doesnt he/she have.?Yes, he does./No, he doesnt.Did+所有主格动词原形?did/didnt you/he/she/they go to school?Yes, i did./No, I didnt.3. 特殊疑问句表示疑问，有疑问词开头，回答有很多种可能。常用疑问词：What、Who、When、Which、Why、Whose、HowWhat do you/they/we+动词原形？ I/They/We+动词原形 What does he/she/it He/She/It +(动词S). What did you/they/we/ he/she/it I/They/We/ He/She/It +动词过去式Eg:What did you do last weekend? I cleaned my room. Who cleaned my room?Your mother cleaned your room.When do you go to school? I go to school at 7 oclock.Which one is your book? The red one is my book.Why do you like this book? Because it is funny.Whose bag is it? It is my bag.How do you go to school? I go to school by bus.如何对划线部分提问：1、将原问句翻译为汉语（在读中要将划线部分重读）。如：His birthday is on the 5th of May . 他的生日在五月五日。2、用汉语进行提问。如上句，应该问：他的生日在什么时候？3、根据汉语将所要提问的句子补充完整。如上句When is his birthday ?一、一般现在时(表示经常性或习惯性的动作)常与 usually, often, every day, sometimes,everyday,now连用肯定句：I go to school on foot everyday.She goes to school on foot every day.一般疑问句:Do you go to school? Yes, I do. / No, I dont.Does he go to school? Yes, he does. / No, he doesnt.否定句： We dont go to school on Sundays.My mother doesnt like watching TV in the evening.二、一般过去时态(表示过去时间里发生的动作或存在的状态)常与表示过去的时间状语连用，yesterday,last week,an hour ago.（a） be 动词的过去式: I/He/she/it was(not). You/we/they were.一般疑问句was, were 放在句首。（b） 动词过去式：肯定句：I watched cartoons.She visited the zoo.一般疑问句： Did you read book last night? Yes, I did. No, I didnt.Did she clean the desk just now? Yes, she did. No, she didnt.否定句： They didnt go the the part yesterday.He didnt make model ships last week.三、there be 结构肯定句：There is a .There a