we can balance of our expenses.是一个语法错误的句子。无论你给什么样的语境,这句话这么说都是错误的语法。这个of加在这里就是错误的,没法解释。we can balance our expenses.才是正确的说法。balance在你这句话里做谓语动词,而balance是及物动词,后面直接接宾语。 第一句话,如果你改成we can keep balance of our...
be sure of 确信 例句:she looked over her shoulder to be sure of her footing.她扭头看了看后面以确认自已是否站稳了.be sure about 对.很有把握例句:you can be sure about their interest in it.你可以肯定他们对引很感兴趣.