in other word是副词短语,不能做连词,如果一定要用,可以用于句首,或者加上and等连词,或加上连字符等等可以连接两个单句的表达方式. He doesn't like work--in other words,he is lazy. In other words,we won the game. He became,in other words,a great actor. 同理,that is to say是副词,用法也一样. That is to say,we have two days' holiday. He found the solution after one day's thinking--that is to say,he solved the problem on Monday.
