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單數(shù)句和復(fù)數(shù)句的轉(zhuǎn)換

日常練習(xí)中,大家經(jīng)常會(huì)遇到單數(shù)句與復(fù)數(shù)句的轉(zhuǎn)換?,F(xiàn)在我們就來學(xué)一學(xué)如何在二者之間進(jìn)行轉(zhuǎn)換。

[操練] 按要求完成單數(shù)句與復(fù)數(shù)句的轉(zhuǎn)換。

1. That is a rubber. (改為復(fù)數(shù)句)

2. These are apples. (改為單數(shù)句)

3. This is a photo. (改為復(fù)數(shù)句)

4. They are girls. (改為單數(shù)句)

[秘訣]

將單數(shù)句變?yōu)閺?fù)數(shù)句,通常要遵循的規(guī)則是:變、刪、留。

[融會(huì)貫通]

變:將單數(shù)句中的指示代詞、人稱代詞、物主代詞、名詞及動(dòng)詞變?yōu)閷?duì)應(yīng)的復(fù)數(shù)形式,如this→these, that→those, he / she / it→they, I→we, my→our, his / her /

its→their, am / is →are, does→do等。

刪:將單數(shù)句中的不定冠詞a / an刪掉。 如:That is a watch. → Those are watches.

留:保留單數(shù)句中的形容詞、定冠詞 the、副詞、疑問詞、介詞等。如:

This is a nice book.→These are nice books.

What is that?→What are those?

The boy in red is my cousin.→The boys in red are our cousins.

He usually does his homework at home.

→They usually do their homework at home.

要將復(fù)數(shù)句變?yōu)閱螖?shù)句時(shí),逆向進(jìn)行轉(zhuǎn)換即可。

 

 

 

Key

1. Those are rubbers.     2. This is an apple.

3. These are photos.      4. She is a girl.

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