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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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