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同义句变换·利用语态改写

通过改变主语,主动语态与被动语态之间可进行同义句转换,特别要注意时态、情态动词的用法。如:

1. People grow rice in the south of China.

Rice_________ _________ in the south of China.

【答案】is grown。rice作主语,助动词用一般现在时的单数形式is。

2. Everyone should give back his library books on time.

Library books should _________ _________ on time.

【答案】be given back。被动句中含有情态动词should,因此助动词用be。

3. It is widely accepted that more people use computers in the world today.

Computers _________ widely _________ in the world today.

【答案】are; used。computers是复数名词作主语,助动词用are,且句子用被动语态。

4. We must keep the noise level under 50dbs(分贝).

The noise level must _________ _________ under 50dbs.

【答案】be kept。被动句中含情态动词must,因此助动词用be。

5. Do they grow rice in autumn?

rice in autumn?

【答案】Is; grown。不可数名词rice作主语, 助动词用单数is,一般疑问句的助动词置于句首。

6. We call maths the language of science.

Maths _________ _________ the language of science.

【答案】is called。主语maths虽然是以s结尾,但并不是名词的复数,因此助动词仍用单数is。

同义句变换·利用反义词改写

用反义词或词组加上否定词表达与原句相同的意思,主要考查学生对反义词、词组的积累和换位思维的能力。如:

1. The boy lent a story-book to Tom just now.

Tom _________ a story-book _________ the boy just now.

【答案】borrowed; from。borrow…from意为“从……借来”;而lend…to意为“向……借出”,两个词组正好为一组反义词组,当句子的主语变化时,两个词组可以进行互换。

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