1．比较对象自相矛盾 误：Zhang Hua is taller than all the students in his class．正：Zhang Hua is taller than any other student in his class．析：使用比较级时，如果比较对象与被比较对象属于同一范畴，应排除自身后再与被比较对象进行比较。排除方法可用“any other +单数可数名词”或“anything／anybody等+else”，注意表达时，不能省略other或else。如：
Cloth-making was greatly increased, both in the United States and in England, by the invention of a machine to remove the seed from the cotton, which grew abundantly(大量地) in the southern area of the United States. This machine was the work of Eli Whitney, a young man from New England who had gone south to teach at school.
Everyone knows what a needle is. Of eourse there are many needles and needles. Needles for sewing maehines, needles for injection(注射), you name it. But few people think of the wonder a needle works in the hands of those who practise acupuncture（针灸疗法）。