nonaccredited colleges cannot provide their students with the same types of services, though still able to enroll students and provide instruction. 这是我在kaplan上看到的一个句子,解释中说,"through..."后面的句子紧跟修饰对象--nonaccredited colleges,我想问的是,难道though放在句尾会有修饰services的歧义吗,求解答