The federal rules aimed at protecting human subjects of medical experiments were established to ensure that patients must be warned of potential risks and that an independent panel evaluate the experiment before it was conducted.
语法 Sentence Correction-3447
标记
正确的用户笔记
wx5u080 2014-12-26 13:54:41
注意ensure 和must be 语义重复
huiminzi1124 2016-06-21 09:58:58
must be和ensure有语意上的重复; 从句时态和主句时态一致
ronaldlee 2015-01-11 14:25:58
evaluate没有用单三，所以一定要选有would的，排除B/C。
softgirlshadow 2015-11-08 01:52:04
"established to ensure that P and Q" - P & Q should be parallel
lkid 2015-09-25 22:52:23
must be和ensure有语意上的重复；ensure后的内容尽量与主句时态一致，过去发生的事情应该用would。
nicolexzs 2014-10-22 19:08:33
must be和ensure有语意上的重复；ensure后的内容尽量与主句时态一致，过去发生的事情应该用would。 这里ensure后面都不是虚拟语气！！如果ensure后面是虚拟，就不会有must be warned
xinyaer 2014-10-07 09:35:11
must be和ensure有语意上的重复; 从句时态和主句时态一致
羊排neer 2014-09-04 15:23:46
must和ensure的意思重复
