不是NN,以下是我的理解 og113,是平行结构的问题, use have ... saw where have ... seen is required ,所以排除A/B/C,此外E的完成时态用的不好,D当中with的短语表示一种状态,符合题意。 og119,这题是定语从句的问题, Choice B, the best answer, uses clear and concise phrasing to state that it is the effects of drug and alcohol abuse that already cost business the sum mentioned. In C, already with business costs of... is awkward and unclear, failing to specify that those prior effects generate the cost.我认为OG的解释很清楚。 There is small meaning difference between A and B: A) the effects of ....abuse, which already are a cost to business of more than $100 billion a year. ----> 1.(the effects) cost is part of a business which is worth more than $100billion a year. ----> 2. (the effects) cost of more than $100 billion a year to business (means it's additional cost to business). B) the effects of .... abuse, which already cost business more than $100 billion a year. ----> (the effects) cost has already more than $100 billion a year 我觉得这两题的问题不在于with 和which,而是在于句子逻辑的理解。 |