1.一个是,既然是agreed,那应该用was还是is, " balloon angioplasty preceded by ultrasound is any better for heart attack patients than....",可以看成一个普遍的规律如此之类的东东? 首先agreed 的时态已经在下面两处体现出来了,对于还没有出现的more research用was是不合适的 Researchers agreed that the study of new treatments for heart attack patients was extremely important but more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than the balloon procedure by itself. 2.是than 后的is需要补出来吗,前面有is和for,不会造成歧义吗? 不会歧异。因为for+人 ;than 如果歧异的话后面的东西应该和人一致,显然不一致,也没划线,不考虑了:)另外by onself是个标志,很难造成歧异 that more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than the balloon procedure by itself. |