五年级上册英语语法【三篇】

五年级上册英语语法【三篇】

【导语】教育要使人愉快，要让一切的教育带有乐趣。WTT小编整理了五年级上册英语语法【三篇】，希望对你有帮助!

Be动词用法

be动词（am、is、are）+not、

情态动词can+ not、

助动词（do、does） + not

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，直接在be动词后+ not。

2、看句中有无情态动词，如有，直接在情态动词后+ not。

3、如上述二者都没有，就应用助动词+ not。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（某人或某物）后，动词前。

（2）确定助动词用do、does，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，

（3）在助动词后加not。

（4）原句中动词假如发生变化就要恢复成原形。

强调一点，有some的要考虑是否要用any。

一般疑问句

一般疑问句

如何将一个肯定的陈述句改为一般疑问句：

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（某人或某物）后，动词前。

（2）确定助动词用do还是does，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

（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。

强调一点，有some的要考虑是否要用any。

过去式

表示过去发生的动作或事件，常和表示过去的时间状语连用，如yesterday, last night, the day before yesterday, 3 days ago, 含有be动词的句子，将动词变为过去式，am, is的过去式为was，are的过去式为were

I was at the butcher’s.

You were a student a year ago.

The teacher was very beautiful ten years ago.

★变疑问句将be动词移动到句首

Were you at the butcher’s?

Were you a student a year ago?

Was the teacher very beautiful ten years ago?

★变否定句在be动词后面加not

I was not at the butcher’s.

You were not a student a year ago.

The teacher was not very beautiful ten years ago.

★肯定回答否定回答

Yes, I was. No, I was not.

Yes, you were. No, you were not.

Yes, he/she was. No, he/she was not.

★特殊疑问句：

What did you do?

(必背)

不含有be动词的句子，将动词变为过去式

I finished my homework yesterday.

The boy went to a restaurant.

The Sawyers lived at King Street a year ago.

★变疑问句在句首加did，动词变为原型

Did you finish your homework yesterday?

Did the boy go to a restaurant?

Did the Sawyers live at King Street a year ago?

★变否定句在主语和动词之间加did not

I did not finish my homework yesterday.

The boy did not go to a restaurant.

The Sawyers did not live at King Street a year ago. ★肯定回答及否定回答

Yes, I did. No, I didn’t.

Yes, he did. No, he didn’t.

Yes, they did. No, they did not.