小学英语句型转换

小学英语句型转换

在现在时态中

Be动词（am is are ）, am is are的原形都是 be 在过去时态中，

Be动词 was were 他们的原形也是be They are were

do did She is was does did 1,在陈述句中， am 当句子的主语为I时 eg: I am a teacher.

is 当句子的主语 为he/she/it等第三人称单数时（当名词性的短语是单数，且在句中做主语是）.

Eg: He is a good boy. This book is on the desk. are当句子的主语为we/you/they及复数现象(可数名词的复数做主语)时:

eg: they are sitting in the classroom. These apples are ripe now.

Was / were 的用法，只看主语是单数还是复数。主语是单数的话，选择BE 动词WAS,如果主语是复数的话，选择 BE动词WERE. I /he /she /it was at home yesterday. They were in the classroom . 2，把陈述句改为否定句，

直接在陈述句中的BE动词后面加NOT。 Eg: I am not a teacher.

He is not (isn’t ) a good boy. This book isn’t on the desk.

They are not sitting in the classroom. These apples are not ripe now. I was not (wasn’t) at home yesterday. 3,把陈述句改为一般疑问句，并作肯定、否定回答。 把BE 动词提前，并且第一个字母要大写，原来的主语第一个字母由大写变小写，句子末尾的句号（。）变问号（？）。 作肯定回答是： YES，主语+ BE 动词 作否定回答是： NO，主语+ BE 动词+ NOT Eg: 1) Are you a teacher ? Yes, I am No, I am not 2) Is he a good boy ? Yes, he is No, he is not 3) Is this book on the desk ? Yes, it is No, it is not

4) Are they sitting in the classroom ? Yes, they are No,they are not (aren’t) 5) Are these apples ripe now ? Yes, they are No,they are not . There Be 1,陈述句

.There is + 不可数名词/单数可数名词（就近原则） are + 可数名词复数

eg: There is a book on the desk. There is much milk in the glass.

There is a book and three apples on the desk. There are many students in the classroom. 2，陈述句变否定句，直接在BE 动词后面加NOT。

Eg: 1) There is not a book on the desk. There is not much water .

2) There are not any students in the classroom. 注：(many and some 在否定句和疑问句中变为 any) 3)陈述句变一般疑问句，并作肯定、否定回答。

把BE 动词提前，句子开头第一个字母要大写，后面的要照抄。 1 There is a book on the desk. Is there a book on the desk ? Yes,there is No,there isn’t

2 There are many students in the classroom. Are there any students in the classroom ? Yes ,there are No, there aren’t Do类动词

在一般现在时态中，使用助动词( do does )，在一般过去时态中，都使用助动词did, 没有人称和数的变化。