练习册

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    主动语态变为被动语态的步骤: (1)将主动句的宾语变为主语: 注意:如果主动句的宾语是代词.需将其由宾格变为主格.如: Tom killed him. → He was killed by Tom. (2)将动词改为"be+过去分词". 注意: They held a meeting yesterday. → A meeting was held by them yesterday. 他们昨天开会了. (3)将主动语态的主语改为be-放在谓语动词后. 注意:如果原主语是代词.则应由主格变为宾格. He sang a song. → A song was sung by him. 【查看更多】

     

    题目列表(包括答案和解析)

    萘乙酸（NAA）是科学家通过化学的方法合成和筛选的在结构和生理作用方面与生长素相似的物质，其生理作用也与浓度密切相关，探究萘乙酸（NAA）对扦插枝条生根作用的最佳浓度范围，在农业生产的应用上具有非常重要的意义。
    　一、实验原理：
    萘乙酸与生长素一样，对植物生长的调节作用具有___________________________性，即
    _______________________________________________________________。（2分）
    二、实验过程与方法：
    （1）取材；取山茶花植株生长良好的半木质枝条，剪成5—7cm，每段插条芽数相同。
    （2）实验：①将插条分别用不同的方法处理如图1；②将处理过的插条下端浸在清水中，注意保持温度（25～30℃）。
    （3）记录：小组分工，根据实验数据，建立数学模型如图2。
    三、结果分析与评价：
    （1）从图2中，可得出的结论是_________________________________________          。
    （2）插条若没有生出不定根，其原因最可能是____________________________            。
    （3）温度、处理时间等要一致，其原因是_________________________________           。
    （4）每组都选取10根插条，其目的是____________________________________           。

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    Many students get ill easily .They have to go to hospital and may miss a lot of classes. What can we do to keep healthy? Here are some tips:
    Healthy food. You should eat less fast food but more vegetables and fruit. You’d better drink 500 ml milk every day .Remember to eat breakfast.
    Enough exercise. Doing exercise is important. It makes you more athletic .You can play some sports after class or on weekends.
    Happy smiles. Smile is a good way to make you healthy .Try to find things that can make you laugh .Remember that smile is the best medicine to cure(治疗)your illness.
    Good rest. If you want to get a good grade ,you must have a good rest .As a famous saying goes, “Early to bed and early to rise makes a man healthy ,wealthy（富有的）and wise（聪明的）.
    【小题1】将划线句子翻译成汉语。_______________________________________.
    【小题2】完成下列句子，每空词数不限。
    If you get ill, you have to __________________________and may __________________.
    【小题3】完成下列句子，每空词数不限。
    You can play sports_________________ or___________

    查看答案和解析>>

    句型转换。
    1. The dress cost so much that she didn’t buy it.（用too … to …改写）
    The dress cost ___  ___  ___  her  ___  buy.
    2. It rained yesterday, so I stayed at home.（用because改写）
    ____ it ____  yesterday,  I  ____  at home.
    3. My parents will go to America in two weeks.（对划线部分提问）
    ___  ____ ___  your parents ___ to America.
    4. People use thermoses (热水瓶)for keeping water warm.（改为被动语态）
    Thermoses ____  ___  ___  ____ water warm。
    5. I hardly ever meet him after he moved to another district.（对划线部分提问）
    ____ ____ ____ you meet him after he moved to another district?
    6. Collecting coins interests the small boy.（用interested改写）
    The small boy ___ ____ ___ ___ coins.
    7. Basketball was invented by a Canadian doctor.（改为主动语态）
    a Canadian doctor _______   ______.
    8. Naismith thinks he can do it well.（改为过去时）
    Naismith ____ he _____ do it well.
    9. He divided the players into two teams of eleven.（改为同义句）
    He ____ the players into two teams of eleven.
    10. He might know anyone at the party.（改为表示否定推测的句子）
    He ____ ____ know anyone at the party.

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    句型转换
    【小题1】Tom has never come to school,                 ? (改为反意疑问句)
    【小题2】 Lisa's brother goes to the cinema twice a week. (对划线部分提问)
    ______________________________________________?
    【小题3】 I didn't know. Where is your home? (变为含宾语从句的复合句)
    ______________________________________________
    【小题4】Sam made this model plane last year. (变为被动语态)
    ______________________________________________
    【小题5】I used to get up early in the morning. ( 改为否定句  )
    _________________________________________________

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    句型转换

    1.Tom has never come to school,                 ? (改为反意疑问句)

    2. Lisa's brother goes to the cinema twice a week. (对划线部分提问)

    ______________________________________________?

    3. I didn't know. Where is your home? (变为含宾语从句的复合句)

    ______________________________________________

    4.Sam made this model plane last year. (变为被动语态)

    ______________________________________________

    5.I used to get up early in the morning. ( 改为否定句  )

    _________________________________________________

     

    查看答案和解析>>

    Ⅰ单项选择

    1. B 2. C 3. D 4. B 5. C

    6. B 7. B 8. A 9. A 10. A

    11. A 12. C 13. D 14. A 15. A

    16. A 17. C 18. B 19. C 20. C

    21.B 22. D 23.B 24. C 25.D

    26. A 27. C 28. B 29. C 30. B

    Ⅱ、把下列句子改为被动语态

    1. The boy was seen to run by me yesterday.

    2. I was told that he would come back soon.

    3. A lot of differences can be found by you between the two languages.

    4. Are your flowers watered every day?

    5. The big tree was blown down last night.

    6. It is thought that he is right.

    7. The bad food had not been thrown.

    8. The trousers were not being mended by my mother.

    9. He would not be taken to Beijing.

    10. I was known by nobody in this town at that time.

     


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