John is a good student,__D_ his best subject.

问题描述:

John is a good student,__D_ his best subject.
A.as English B.being English C.English as D.English being
为什么选D?其他的选项为什么不能选?

这个句子本来应该是:John is a good student,and English is his best subject.但是,没有and,因此我们要用ing-分词来表达,在这里,English being his best subject起补充说明的作用.翻译:John是个好学生,英语是他最好的科目.