Grammar must be pointed out to be rather crucial in the examination of postgraduates.
这个句子中to be rather crucial干什么成分? to be可以去掉吗?
Grammar must be pointed out to be rather crucial in the examination of postgraduates.
to be rather crucial in the examination of postgraduates 为不定式短语作主语补足语。to be 不可省略。本句由下句转换而来:
It must be pointed out that grammar is rather crucial in the examination of postgraduates.