【正确答案】正确答案：Errors are significant in telling the teacher what needs to be taught, in telling the researcher how learning proceeds and those errors are a means whereby learners test their hypotheses a-bout the language to be learnt. They are worth further probing Error Analysis involves, first independently or objectively, describing the learners' interlanguage (that is, their version of the target language and the target language itself) , then a comparison of the two is followed to locate mismatches. Different from contrastive analysis, Error Analysis, EA for short, gives 1 ess consideration to learners' native language. The procedure of Error Analysis consists of the following steps: (1) Recognition (2) Description. (3) Explanation. For example, explanation; the absence of an item that must appear in a well-formed utterance: e. g. She sleeping. Type of error: Omissions.