SAT写作之如何正确使用代词
使用代词的时候，应明确其所指称或代表的先行词。如果容易引起歧义，应明确写明先行词，不用担心重复。例如：
错误：The teacher told the student he was lazy.
正确：The student was lazy, and the teacher told him so.
避免用this、that、it或which来指代整个短语或句子，即使这些代词与其指代的先行词很近，你可以用这些词再加上一个名词来指代。例如：
错误：The salesman spoke loudly, swayed back and forth, and tapped the table nervously, which made his customers extremely nervous.
正确：The salesman spoke loudly, swayed back and forth, and tapped the table nervously, mannerisms which made his customers extremely nervous.
除非指代天气，否则句子开头不要用it指代。
错误：It is difficult to distinguish between the scent of roses and that of tulips.
正确：T o distinguish between the scent of roses and that of tulips is difficult.
少数不定代词(some、all、most、any、none)既可以指代单数名词，也可以指代复数名词。当这些代词做主语时，必须明白其先行词是单数还是复数。
错误：His superiors have been following his progress. Some are more impressed than others. None are overwhelmed.
记住：以-body、-one、和-thing结尾的代词在数上始终是单数含义;both、few、many、several等代词在数上始终是复数含义。