The computer is a useful machine. It is one of the most important inventions. The oldest kind of computer is the abacus, used in China many centuries ago, but the first large and modern computer was invented in 1946. The computer could work out maths problems quite fast.
Now the computers are getting smaller and smaller, and computing faster and faster. Many scientists agree that computers can now do many things, but they cannot do everything. Who knows what the computers tomorrow will be like? Will computers bring good things or bad things to people? The scientists today have to decide how to use the computers tomorrow.
so inventing is the most useful.
The abacus was invented in the sixth century by Chinese people.The umbrella was invented about 4000 years ago in Assyria,China and Egypt.The binoculars was invented in 1854 by Ignatio Porro in Italy.The camera was invented in 1827 by Joseph Nicephore Niepce who took the first picture.The bicycle was invented in 1880s in England.。
I think the most important modern invention is the Internet. With the Internet, we can do many things. For example, we can shop, learn knowledge, listen to music, and watch movies online. The Internet makes the world smaller. We can meet and talk to friends and relatives far away without spending a lot of money. We can also post our blogs online so our friends can know what we are doing by visiting our websites like QQ Space. Internet makes our life more exciting and easier.。
The most useful Invention
We knew there had been many inventions last century, for example, telephone, phonograph, airplane, computer and so on. What's the most useful invention? I think the most useful invention should be telephone.With invention of the telephone in 1876, the people who live in eastern and western hemisphere seemed nearer and nearer to live. The most usuful invention was invented by Alexander Gray Ham Baer. Many young people admire Baer. If we study hard now, we can invent something useful for the world in the future.
There are many inventions in the world, but my favorite invention is the computer. As a student the computer helps me a lot. With the computer, I can find lots of information I need. I can read books, know the latest news and watch movies. I can play games or listen to music when I am tired. It is easy to communicate with my friends. I often chat with them through e-mails and QQ. So, I think computer is the most useful invention.
As we all know,The Compass ,Gunpowder ,Papermaking,and Printing are our Chinese great inventions.Our ancestors created them by their own mind and hand.These inventions not only have an effect on our daily life,but also contribute to the culture all aroud world.But which is the most useful and practical invention to us?Well,as far as I concerned,the paper that we use now was first invented in Han dynasty,at that time this invention did improve their hand writing.Just imagine how our life will be if we live without paper?so,in a word,I think the paper is the most useful invention.。
What do you think is the most useful invention ?
这里的 do you think 不过是插入语，去掉句子依旧完整。
主语当然是 the most useful invention ,is 是系动词 ，提问的what 是表语， do you think 是插入语。
不懂请追问，望采纳，祝开心~ o（∩_∩）o 哈哈~~~
The most important invention The most important invention is the invention of light!Before that is invented,people live in a dark invironment.When edison invent the light,people can live in a good invironment,after all,the invent of light is the most important!。