In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing and fugus was growing on the walls. 答案说causal sequence 是 visitor breath->moisture->salt crystal->chamber close for cleaning and repair.请问这个意思就是close的原因是salt crystal而不是breath 或者 moisture吗?? 还有答案中划线句错误的原因是 due to 这个短语 imprecise, 使tourists' breath 和 closing for cleaning关系不明确 请问怎么解释呢?due to 的用法是什么呢?
due 是adj, 要加be动词一起使用,be due to... In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair(修复在这里是名词)因此在 due to前要加个were。
due to的确imprecise,因为在书面语中逻辑关系应该用更明确更显著的连词表达出来,比如because等,due to有些非正式。 逻辑关系是这样的,造成cleaning and repair的不是moisture这个环节本身,而是游客呼吸产生moisture然后产生盐结晶这么一个因果链,因此要把整个因果链表述清楚而不是特意强调其中脱离的一环。因此用because连接句子能更加确切地表达整个原因。