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1. the children were very joyful, they had a wonderful holiday last weekend.
-> the children who had a wonderful holiday last weekend were very joyful.
2. the first year students will use computers in the language lesons.
-> computers will be used in the language lessons by the first year students
3. how about using banana leaves to wrap food?
-> he suggests using banana leaves to wrap food.
10. Dùng động từ trong ngoặc ở dạng dúng
The world's first computer (1) was built..........(build) at the University of Pennsylvania in 1946,although computer-like machines (2)...were built......(build) in the 19th century.Computers(3)...were sold.......(sell)commercially for the first time in the 1950s, and progress (4)....has been made......(make)since than.Computers are now much smaller and more powerful, and they can (5)..be bought.......(buy)much more cheaply. Computers (6).....have been used....(use) in many fields - in business, science, medicine and education. They can (7)...be used.....(use) to forecast the weather or to control robots which make cars. The computer's memory is the where information (8)..is kept........ (keep) and calculations (9)...are done.. (do). A computer can not think for place itself. It must (10) ....be told......(tell) exacly what to do.A lot of calculations can (11)..be done.......(do)very quickly on a computer Computer don't make mistakes. Stories (12) ....are heard.....(hear) sometimes about computers paying people too much money or sending them bills for things they didn't by. These mistakes (13) ..are made.......(make)by the programmers. Some years ago, an American computer-controlled rocket went out of control and had(14)..been destroyed...... (destroy). The accident (15) .....was caused....(cause) by a small mistake in one line of the program,which cost the USA 18 million dollars. Criminals have found that "computer crimes" are a lot easier than robbing banks. Hundreds of millions of dollars (16)..have been stolen........(steal)from bunesses every by people changing the information in computers. Large numbers of home computers (17).....have been sold....(sell) recently. People know more about computers than they used to, and computers are playing a bigger part in our lives. Progress (18)......is made.... .(make) all the time. Many people believe we can look forward to the day when even our household jobs like cleaning and decorating (19)....are done....(do) by computer-controlled robots.
(1) was built
(2) were built
(3) were sold
(4) has been made
(5) can be bought
(6) are used
(7) be used
(8) is kept
(9) are done
For good or bad, computers are now part of our daily life. With the price of a small home computer now as low as $50, experts predict that before long all schools and businesses and most families in the richer parts of the world will own a computer of some kind. Among general public, computers arouse strong feelings. People either love them or hate them.
The computer-lovers talk about how useful computer can be in business, in education and in the home. Apart from all games, you can do on them, your accounts on them, learns languages from them, write letters on them and in some places even do your shopping with them. Computers, they say will also bring more leisure, as more and more unpleasant jobs are taken over by computerized robots
The latter, on the other hand, argue that computers bring not leisure but unemployment. They worry, too that people who spend all the time talking to computers will forget how to talk to each other. Their biggest fear is that computers may eventually take over from human being altogether
the first year students will use computers in the language lessons.
-> computers will be used by the first year students in the language lessons