【正确答案】正确答案：Through IC analysis, the internal structure of a sentence may be demonstrated clearly, and if there is any ambiguity, it could be revealed. For example, how the sentence " Leave the book on the shelf" is ambiguous could be shown after the IC analysis. However, there are also problems in IC analysis. First, at the beginning, some advocators insisted on binary divisions, that is, any construction, at any level, will be cut into two parts. But this is not always possible. For example, in the phrase "men and women" , it is not appropriate to combine "and" with only the preceding part or only the succeeding part. Second, constructions with discontinuous constituents will pose technical problems for tree diagrams in IC a-nalysis. For example, in "make it up" the phrasal verb "make up" is separated by a pronoun. Third, which is also the most serious problem, there are structural ambiguities which cannot be revealed by IC analysis, as shown in "the love of God". In IC analysis, the different relations of "God" to the word "love" cannot be shown, which makes the expression ambiguous.