What will the effect be on the twins if they are separated?怎么分析结构 为什么要用be

问题描述:

What will the effect be on the twins if they are separated?怎么分析结构 为什么要用be

will后面加动词原形,be动词原形即为be.
此句为疑问句所以will提前,若还原疑问句为陈述句即the effect will be...on the twins if...另外on the twins在此移后了,按中文译即为the effect on the twins will be...