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than是比较的意思,不能用from(从)代替 than1.跟从句（带有主语和谓语或部分谓语） Are you prepared to work harder than you have been doing ? They produced 53 per cent more steel in 1925 than they did in 1914. At this time she was happier than she had ever been. I glanced at my watch. It was earlier tahn I thought. 2. 跟一个充当状语从句的词或词组（如副词,介词短语或从句） They arrived earlier than usual. They work better together than if they are alone. 3.跟其他成分（如不定式，形容词，动词等） It is easier to do it yourself than (to) explain it to her. I cannot do better than get away for the few days. She was not more surprised than angry.
