关于电脑取代教师的雅思作文范文

　　Computers are now essential in many areas of life - modern banking. retail and information exchange among others. However, this is not true for education. At a simple level some subjects may be better taught using computers. but to explain important concepts a human teacher is still indispensable.

　　There are some subjects in which a computer can be used successfully to teach.Elementary mathematics. elementary language learning and any area which requires a student to memorise basic facts through repetition is well suited to computer learning.The computer can be programmed to provide an endless number of simple questions.and as the student answers these questions the facts are learned and reinforced.

　　However, in the learning and practice of more complex ideas, the computer is not adequate. A computer can evaluate an answer as right or wrong, but it cannot determine why. It cannot find out why a student is making mistakes and then represent important concepts in a different way so the student will understand. It cannot determine at what stage in a mathematics problem the student has made an error: it can only indicate that the final answer is wrong. Tasks involving reasoning cannot be taught by computers, as there are too many variables for a computer to deal with successfully. In all these cases, a human teacher seems indispensable in class.

　　Thus, while computers may be useful as a tool for practising simple skills, they are not an essential feature of modern education, because they cannot monitor a student's grasp of concepts, nor evaluate a student's reasoning. Until further developments in computers are made the human teacher will remain indispensable.

　　essential

　　本质的，实质的，基本的，提炼的，精华的

　　The museum is closed while essential repairs are being carried out.

　　indispensable

　　不可缺少的，必要的

　　A good dictionary is indispensable for learning a foreign language.

　　reinforce

　　加强，增援，加固

　　Success in the talks will reinforce his reputation as an international statesman.

　　evaluate

　　评价，估计，求……的值

　　Our research attempts to evaluate the effectiveness of the different drugs.

　　indicate

　　指出，显示

　　The article claims that an increase in crime indicates a decline in moral standards.