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    9．其他用法: 1)基数词+单数名词+形容词构成合成形容词.如:一个五岁的男孩a five-year-old boy, 一座800米长的桥an 800-metre-long bridge,女子400米接力girls'400-metre relay race. 2)具体数词+metre／kilo(s)long ／ high ／tall ／deep ／away等.如:长江长6300公里.The Changjiang River is 6.300 kilometres long． 3)表示"几十岁"用序数词.eg. 在他三十几岁时 in his thirties 4)倍数的表达:(一倍用once.两倍用 twice.两倍以上用基数词+times.如:5倍five times). 例如:He is as tall a boy as I. He is a head taller than I . He is two years older than I China is four times as large as Europe. I am twice as old as you. (=I am twice older than you. /I am twice the age of you.) My books are twice as many as yours. China is four times larger than Europe.(=China is four times the size of Europe.) I pay twice as much as it was worth. I pay twice as much for the house. 例题解析:举一反三.学的更轻松! 【查看更多】

     

    题目列表(包括答案和解析)

    根据要求写出下列单词。
    1.upstairs (反义词) ___________________
    2.by air (同义词) _____________________
    3.never (反义词) _____________________
    4.sheep (复数形式) ___________________
    5.reporter (动词) _____________________     		6.busy (副词) _______________________
    7.second (基数词) ___________________
    8.noisy (名词) _______________________                
    9.children (单数) _____________________
    10.die (形容词) ______________________

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    按要求写出下列词的相应形式

    1．do(单数现在式)________

    2．run(名词)________

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    词形转换。
    1. month (复数)              
    2. party (复数)              
    3. competition (同义词)      
    4. date of the birth (同义词)
    5. twenty-first (基数词)         		________
    ________
    ________
    ________
    ________    		 6. have (第三人称单数)
    7. nine (序数词)      
    8. twelve (序数词)    
    9. twenty (序数词)    
    10. thirty (序数词)       		________
    ________
    ________
    ________
    ________

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    根据括号内的要求，写出单词的正确形式。
    1. one (序数词)        _________
    2. second (基数词)   _________
    3. he (宾格)             _________
    4. answer (反义词)   _________
    5. tomato (复数)       _________    		 6. twelve (序数词)                 _________
    7. have (第三人称单数)         _________
    8. she (形容词性物主代词)    _________                     
    9. father (所有格)                  _________

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    词形转换。
    1. art(表示人的名词)
    2. also(同义词)
    3. sell(名词)
    4. twelve(序数词)
    5. thirty(序数词)     		_________
    _________
    _________    
    _________
    _________    		 6. them(形容词性物主代词)
    7. 21st(基数词)
    8. party(复数形式)
    9. you(反身代词)     		_________
    _________                        
    _________
    _________

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