标题: 求问一道prep08，为什么要加that？平行问题？ [打印本页] 作者: Doreen_ 时间: 2018-12-11 16:09 标题: 求问一道prep08，为什么要加that？平行问题？ 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.
Amore research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than
Bmore research was needed for determining whether or not balloon angioplasty preceded by ultrasound is any better for heart attack patients than is
Cthat more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than
Dthat more research was needed to determine that balloon angioplasty preceded with ultrasound was any better for heart attack patients than
Ethat more research was needed for determining that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than i
OA: C 我想问为啥一定要加that，不可以是agreed that【.....but.....】表示从句内自己的转折吗？
Ron在曼哈顿的回帖说
"And" is the parallel marker. The stuff [size=14.0084px]after[size=14.007px] "and" must be included in the structure.
[size=14.007px]Then, go to the left (before the marker), and see whether you have stuff that matches it.
[size=14.007px]同理but，是but后的部分决定前面的平行部分应该include什么吧，所以but后不是必须有that啊
就是xxx is important but more research was needed这样一个转折句意不可以咩？