what to do 和how to do it 的语法要点
问题描述：
what to do 和how to do it 的语法要点
答
“疑问词+不定式动词”其主要功用有下列五种：⑴当主语,如：● When to hold the meeting has not yet been decided.● Where to live is a problem.● How to cope with the rising cost of living becomes a daily...