主動(dòng)語(yǔ)態(tài)變?yōu)楸粍?dòng)語(yǔ)態(tài)的步驟: (1)將主動(dòng)句的賓語(yǔ)變?yōu)橹髡Z(yǔ): 注意:如果主動(dòng)句的賓語(yǔ)是代詞.需將其由賓格變?yōu)橹鞲?如: Tom killed him. → He was killed by Tom. (2)將動(dòng)詞改為"be+過(guò)去分詞". 注意: They held a meeting yesterday. → A meeting was held by them yesterday. 他們昨天開(kāi)會(huì)了. (3)將主動(dòng)語(yǔ)態(tài)的主語(yǔ)改為be-放在謂語(yǔ)動(dòng)詞后. 注意:如果原主語(yǔ)是代詞.則應(yīng)由主格變?yōu)橘e格. He sang a song. → A song was sung by him. 【查看更多】

 

題目列表(包括答案和解析)

萘乙酸（NAA）是科學(xué)家通過(guò)化學(xué)的方法合成和篩選的在結(jié)構(gòu)和生理作用方面與生長(zhǎng)素相似的物質(zhì)，其生理作用也與濃度密切相關(guān)，探究萘乙酸（NAA）對(duì)扦插枝條生根作用的最佳濃度范圍，在農(nóng)業(yè)生產(chǎn)的應(yīng)用上具有非常重要的意義。
　一、實(shí)驗(yàn)原理：
萘乙酸與生長(zhǎng)素一樣，對(duì)植物生長(zhǎng)的調(diào)節(jié)作用具有___________________________性，即
_______________________________________________________________。（2分）
二、實(shí)驗(yàn)過(guò)程與方法：
（1）取材；取山茶花植株生長(zhǎng)良好的半木質(zhì)枝條，剪成5—7cm，每段插條芽數(shù)相同。
（2）實(shí)驗(yàn)：①將插條分別用不同的方法處理如圖1；②將處理過(guò)的插條下端浸在清水中，注意保持溫度（25～30℃）。
（3）記錄：小組分工，根據(jù)實(shí)驗(yàn)數(shù)據(jù)，建立數(shù)學(xué)模型如圖2。
三、結(jié)果分析與評(píng)價(jià)：
（1）從圖2中，可得出的結(jié)論是_________________________________________          。
（2）插條若沒(méi)有生出不定根，其原因最可能是____________________________            。
（3）溫度、處理時(shí)間等要一致，其原因是_________________________________           。
（4）每組都選取10根插條，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(治療)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（聰明的）.
【小題1】將劃線句子翻譯成漢語(yǔ)。_______________________________________.
【小題2】完成下列句子，每空詞數(shù)不限。
If you get ill, you have to __________________________and may __________________.
【小題3】完成下列句子，每空詞數(shù)不限。
You can play sports_________________ or___________

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句型轉(zhuǎn)換。
1. The dress cost so much that she didn’t buy it.（用too … to …改寫）
The dress cost ___  ___  ___  her  ___  buy.
2. It rained yesterday, so I stayed at home.（用because改寫）
____ it ____  yesterday,  I  ____  at home.
3. My parents will go to America in two weeks.（對(duì)劃線部分提問(wèn)）
___  ____ ___  your parents ___ to America.
4. People use thermoses (熱水瓶)for keeping water warm.（改為被動(dòng)語(yǔ)態(tài)）
Thermoses ____  ___  ___  ____ water warm。
5. I hardly ever meet him after he moved to another district.（對(duì)劃線部分提問(wèn)）
____ ____ ____ you meet him after he moved to another district?
6. Collecting coins interests the small boy.（用interested改寫）
The small boy ___ ____ ___ ___ coins.
7. Basketball was invented by a Canadian doctor.（改為主動(dòng)語(yǔ)態(tài)）
a Canadian doctor _______   ______.
8. Naismith thinks he can do it well.（改為過(guò)去時(shí)）
Naismith ____ he _____ do it well.
9. He divided the players into two teams of eleven.（改為同義句）
He ____ the players into two teams of eleven.
10. He might know anyone at the party.（改為表示否定推測(cè)的句子）
He ____ ____ know anyone at the party.

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句型轉(zhuǎn)換
【小題1】Tom has never come to school,                 ? (改為反意疑問(wèn)句)
【小題2】 Lisa's brother goes to the cinema twice a week. (對(duì)劃線部分提問(wèn))
______________________________________________?
【小題3】 I didn't know. Where is your home? (變?yōu)楹e語(yǔ)從句的復(fù)合句)
______________________________________________
【小題4】Sam made this model plane last year. (變?yōu)楸粍?dòng)語(yǔ)態(tài))
______________________________________________
【小題5】I used to get up early in the morning. ( 改為否定句  )
_________________________________________________

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句型轉(zhuǎn)換

1.Tom has never come to school,                 ? (改為反意疑問(wèn)句)

2. Lisa's brother goes to the cinema twice a week. (對(duì)劃線部分提問(wèn))

______________________________________________?

3. I didn't know. Where is your home? (變?yōu)楹e語(yǔ)從句的復(fù)合句)

______________________________________________

4.Sam made this model plane last year. (變?yōu)楸粍?dòng)語(yǔ)態(tài))

______________________________________________

5.I used to get up early in the morning. ( 改為否定句  )

_________________________________________________

 

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Ⅰ單項(xiàng)選擇

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、把下列句子改為被動(dòng)語(yǔ)態(tài)

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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