Translation is different from reading. When we reading, it no matter how much we understand or can be understand or have erroneous comprehension. Because level of the readers is limited. Reading is only a feeling of himself. But translation affects others. Instead of the original author, translation is a man retell source language massage to target language. So translators should comprehened the source language message deeply and thoroughly, then retell the meaning of the source language correctly and close to the source language message. If a translator comprehened the source language just a little nmbiguiously,translation would be different from the source language message. The refore, comprehension is very important. If translators had false comprehension to the source language message, his translation could be far from the original. This will lead his translation to be unqualified.
At last, enhance acceptability of translation. From above we know that translation should accord with the expressive way of target language, so that it can be easily accepted by target language readers. Actually, it is not difficult to retain the style of the original. But it is difficult to translate the original accord with target language expressive way. A translator who has abandant experience can surmount obstacle between two language. An excellent translator must have done his best effort on his translation. This is translators' duty. An excellent translator has practised a lot on how to handle the problems in translation. Excellent translation are acceptable.
From all above, literal translation is a basic skill of translation. It keeps the form of source language, including construction of sentences, mataphor. Sometimes it should do some neccessary change to the original, make the translation accord with the expressive way of target language. So make the translation acceptable. A translation which translated literally is close to the original. But literal translation is not omnipotent. Some sentences should not translate literally, because these sentences contained idioms which are different in source language and target language. Translators should have extensive knowledge. Comprehened source language message correctly and thoroughly, enhance acceptability of translation. If translators want to use literal translation properly and skillfully, they must comprehened all above, and have some practice. After all, practise is the most important aspect in translation.
3. How to use free translation properly?
3.1 If it was some trouble to understand a sentence in using literal translation, use free translation.
In which suituation the translators can not use literal translation? When some sentences that the way of expressive between source language and target language are different, should not use literal translation. If use literal translation, target language readers would have some trouble to understand, then make the translation unacceptable. In these suituation, free translation should in use. Free translation expresses the general idea of the original according to the meaning of the original, and does not pay attention to the details. But translation should be fluent and natural.