Tom was ranked the first in his class, based on the fact that he got 98 in the exam, which is higher than anyone else's in his class. 请问这个based on 是什么状语,逻辑主语应该不是主句的主语。四种状语成分里边的哪一种?附加状语、下加状语、...
but after they were finished those expensive buildings just sat there empty, after huge amounts of money were spent to build them.本句中的sat there empty的语法解释,sat在本句中应该为不及物动词,后面跟empty是形容词作补语?
All substances, ______, liquid or solid, are made up of atoms. A be they gasesB whether they are gasesC they are gasesD they can be gases为什么选A? B为什么不行?