八种时态句子怎样变否定句和一般疑问句
时态是英语中考的一项至关重要的考点，广大初中学生在实际运用时，往往对时态总是倍感棘手，下面我们就对这几种时态句子的否定句和一般疑问句的变形进行一些归纳整理。 一、一般现在时：
概念：表示经常、反复发生的动作或行为及现在的某种状况。
基本结构：即谓语动词形式：①be动词原形；②行为动词（原形或“三单”形式）如： 1, I am a student.
2, They get up early. 3, He helps us. 助动词：does 和do
方法：1，首先观察句子中的谓语动词是be 动词呢还是行为动词（表示具体动作行为的词 如：play) 2, 变一般问句：Be 动词的话就把be放到句首，若是行为动词就把do放到句首。 注意当主语为第三人称单数时，用dose放句首，谓语动词要变回原形。当然别忘句末加问号。 如上面的句子变一般问句分别为： Are you a student? Do they get up early? Does he help us?
3，变否定句时，如句中有be动词就在be后加not,若是行为动词就在行为动词前加 don't，如主语为第三人称单数，则加doesn't，同时动词变原形。 I am not a student.
They don't get up early. He doesn't help us. 二、一般过去时：
概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。 基本结构：①be动词（was或were）；②行为动词(动词过去式)如： 1，He was a student two years ago. 2，They came back last night. 助动词：did
1,变一般问句时，①把was或were放于句首，谓语动词是行为动词时，就把did 放到句首，动词变回原形。句末加问号。上例可变为： Was he a student two years ago? Did they come back last night?
2,变否定句时，①was/were+not;②在行为动词前加didn't，同时还原行为动词。如 上例可变为：
He wasn't a student two years. They didn't come back last night.
三、现在进行时：
概念：表示现阶段或说话时正在进行的动作及行为。 基本结构：am/is/are+doing
一般疑问句：把be动词放于句首。句末加问号。 变否定句：am/is/are+ not doing. 如：He is working now.变成;
Is he working now? He isn't working now. 四、过去进行时：
概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。 基本结构：was/were+doing
变一般疑问句：把was或were放于句首。句末加问号。 变否定句：was/were + not + doing.
如：He was working at that time.变成： Is he working at that time?
He wasn't working at that time.
五、现在完成时：
概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。
基本结构：have/has + done 助动词：have或has
变一般问句：把have或has 放到句首即可，其他不变。句末加问号。 变否定句： 在助动词have或has后面加not 即可，其他不变。
如，I have worked .变成： Have you worked? I haven't worked. 六、过去完成时：
概念：以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即“过去的过去”。 基本结构：had + done. 助动词：had
一般疑问句：had放到句首，句末加问号。 变否定句： had + not 即可。如：
You had worked long before.变成： Had you worked long before ? You hadn't worked long before.
七、一般将来时：
概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。 基本结构：①am/is/are/going to + 动原；②will/shall + 动原 助动词：will或shall
变一般问句时：有will或者shall就把他们放到句首，be going to 句型则把 be 放到句首，句末加问号。
变否定句时： 在will或shall 后加not(有will或shall时）或者在be 之后加not. 如：He is going to work . You will work . 可变为
Is he going to work? He isn't going to work. Will you work? You will not work. 八、过去将来时：
概念：立足于过去某一时刻，从过去看将来，将要去做的事情。常用于宾语从句中。 基本结构：①was/were/going to + 动原；②would/should + 动原. 助动词：would或should 变一般问句时： 在was /were going to 结构中把was或were放到句首。有would或should 则把它们放到句首。句末加问号。
变否定句时： 在was /were going to 结构中就在他们之后加not 即可，有would或 Should的，则在它们之后加not 即可。 如：He was going to play soccer.
We would tell them . 分别可变为：
1, Was he going to play soccer? He wasn't going to play Soccer.
2, Would you tell them? We wouldn't tell them.
重要补充1：在句子中如果有情态动词的话，比如说有can ,could ,may might ,must should等。变一般问句就把这些词放到句首，句末后加问号，变否定句时，则 在这些词之后加not 即可。如 I can sing . Can you sing? I can't sing.
重要补充2： 特殊疑问句= 特殊疑问词 + 一般疑问句 如： How much is it?
练习:
把下面的句子变成一般疑问句和否定句：
1,He goes to school everyday.
Does he go to school everyday? He doesn’t go to school everyday? 2,They work there Do they work there? They don’t work there. 3,He worked in the hospital. Did he work in the hospital? He didn’t work in the hospital. 4,He was 10 years old. Was he 10 years old? He wasn’t 10 years old.
5 ,He is cooking. Is he cooking? He isn’t cooking. 6, They were cooking then. Were they cooking then? They weren’t cooking then. 7,He has gone to Beijing.
Does he has gone to Beijing? He hasn’t gone to Beijing. 8,They had gone when we got there.
Did they have gone when we got there? They didn’ have gone when we got there.
9, we could wait for them. Could they wait for us? We couldn’t wait for them. 10,He is going to learn English
tomorrow.(对划线部分提问)
When is he going learn English?
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