Xác định mệnh đề tính từ và thêm dấu phẩy cho chính xác

1. Families whose incomes are below a certain level pay no income tax

2. My family whose incomes is more than $50,000 pays about 25% income tax.

3. The sun which in 40 minutes can produce enough solar energy to meet humankind’s needs for a year is one of Earth’s potential sources of power.

4. We are at the beginning of a medical computer revolution, according to an article that appeared in Time magazine.

5. A medical computer is a machine that analyzes the results of laboratory tests and electrocardiograms.

6. A physician, who feeds a patient’s symptoms into a computer, receives a list of diseases that fit the symptoms of that patient.

7. Laser beams which are useful in both medicine and industry were predicted in science fiction stories 75 years ago.

8. The country that has the highest per capital income is not the US which is in third place

9. Kuwait which is a small country in the Middle East is in first place

10. It was a thrilling experience to meet the author of the book that we had been reading all semester

11. The public is highly critical of the tobacco industry whose profits have been increasing in spite of the health risks of smoking

12. Carbohydrates which are composed of carbon, hydrogen, and oxygen are organic compounds

13. People who use body language to express themselves are interesting to watch

14. My brother in law who is from Italy moves his hands a lot when he is talking

15. The man whom the president nominated to the Supreme Court is an experienced and respected judge.

16. X-ray machines are gradually being replaced by machines that can provide clearer, more detailed images of the human body, its tissues, and its organs.

17. X-ray machine are gradually being replaced by CAT scanners and MRI devices which can provide clearer, more detailed images of the human body, its tissues, and its organs

18. The company promised to reimburse everyone who had bought a defective product.

19. Students whose grade point averages fall below 2.0 will be placed on probation

20. She plans to marry her childhood sweetheart whom she has known since they were five years old.

Viết lại các câu sau thành mệnh đề danh từ 

1. All citizens must conserve water whenever possible .What does the water department recommend?

2. Every individual must decrease water use.What will the water department demand?

3. Every family must reduce its water use by 40% .What is necessary?

4. In the cities, everyone must limit showers to 5 minutes.What does the water department propose for city dwellers?

5. In the countryside, farmers must cut their water use by 25%.What required of farmers?

6. Every farmer should install a drip irrigation system.What is suggested for farmers?

7. People in the suburbs must not use water to wash cars, sidewalks, or streets .What does the water department urge for people living in suburban areas?

Tìm lỗi và sửa cho đoạn văn sau:

Professor Sanchez gave a lecture on transitors last Tuesday. First, he explained what are transistors. He said, that they are very small electronic devices used in telephones, automobiles radios and so on. He further explained that transitors control the flow of electric current in electronic equipment. He wanted to know which popular technological invention cannot operate without transistors. Most students agreed, it is the personal computer. Professor Sanchez then asked if the students know how do transitors function in computers. He said that the transitors were etched into tiny silicon microchips and that these transistors increase computer’s speed and data storage capacity. Then he asked the class when had transitors been invented. Sergei guessed that they were invented in 1947. The professor said that he is correct. Professor Sanchez then asked what was the importance of this invention. Many students answered that it is the beginning of the information age. At the end of the lecture, the professor assigned a paper on transistors. He requested that each student chooses a topic by next Monday. He suggested that the papers are typed.

Xác định mệnh đề danh từ trong bài sau:

Some people believe that children should spend all of their free time with their families. Others believe that this is unnecessary or even negative. Discuss the possible arguments on both sides, and say which side you personally support.

Nobody can deny that parental influence is important for children, at least in cases where children live with their parents, foster parents or guardians. However, it is by no means clear that children should spend exclusively in the family, as we will see.

On the one hand, it may appear advisable for parents to act as role models and establish ground rules for behaviour by spending as much time as possible with their children. This allows the youngers follow themselves, hopefully leading to an absence of problems such as bullying, truancy and deliquency later on. Furthermore, being with the family should reduce the risk of children falling victim to crimes such as abduction, or coming under the influence of negative peer pressure.

On the other hand, we have to ask whether this is a practical proposition. In a society where many families are dual-income, or where one parents’s role as breadwinner means he/she is away from the family for long periods, it is inevitable that children cannot spend all of their time with the family. Child-minding and after-school childcare are often used in these cases, and if managed properly, these can be perfectly viable alternatives. Equally, it seems that children can in some cases learn a considerable amount from their peers in addition to adults, and allowing them to play without direct supervision may be a benefit.

To conclude, it appears that while family time is essential for bonding and absorbing patterns of behaviour, there are definite advantages when children are outside the family too. This is provided that (only if) they are in a safe, well-behaved environment with peers who are themselves reasonably well brought-up.