一般疑问句和否定句的改法精编版

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一、陈述句改为一般疑问句：

1.当句子中含有be动词(am is are was were)或情态动词(can, could, may, should等）时，把be动

词或情态动词提到句首。

如：①He is a docter.-----Is he a docter? ②They were in the house yesterday.----Were they in……?

另外，为符合实际习惯

I am/We are..…------Are you…? I was/We were…-----Were you….?

I /We can…-----Can you…..?

2.当句中含有实义动词时，也就是句子不含上面所提到那些be 动词或情态动词时，必须在句首

加DO/Does/Did,具体情况分以下三方面：

㈠当句子中含有动词原型时，在句子前加Do, 其中，I + 动词。。。------Do you…?

如：①I like music.---Do you like music? ②They work here.----Do they work here?

㈡当句子中含有的动词加S或es时，即句子是一般现在时，且主语为第三人称单数时，在句子前加Does.如：①He likes music.------Does he like music?

②Tom comes from China.-----Does Tom come from China?

（注意在此情况下，应把疑问句中的动词变原型。）

㈢当句子中的动词为过去式，在句子前加Did再把动词变原型。如：

I went to the park yesterday.-----Did you go to the….?

He played football this morning.-----Did he play……?

二、陈述句改为否定句：

1.当句子中含有be动词(am is are was were)或情态动词(can, could , should等），在be动词或情

态动词后加not.如：

①He is a docter. ----He is not a docter.

②They were in the house yesterday.---They were not in……

③Tom can swim.-----Tom can not swim.

2.当句中含有实义动词时，也就是句子不含上面所提到的be动词或情态动词时，必须在原句动词

前加don’t,或doesn ’t或didn’t：

㈠当句子中含有动词原型时，在动词前加don’t：

如：I like music,-----I don’t like music. They go to school by bike.-----They don’t go to……

㈡当句子中含有的动词加s或es时，即句子是一般现在时，且主语为第三人称单数时，在句子中的动词前加doesn ‘t，再把动词变原型:

如：He likes music.-----He doesn’t like music.

Tom works here----- Tom doesn’t work here.

㈢当句子中的动词为过去式，在动词前加didn’t，再把动词变原型

如：I went to the park yesterday.------I didn’t go to……….

He played football this morning ------He didn’t play football…….

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