动词不定式的解析及运用

动词不定式的解析及运用动词不定式的解析及运用：此材料用归纳，总结的方式介绍了动词不定式的六种基本形式（to do, to be doing, to have done, to have been doing, to be done, to have been done),和它的七种基本用法，最后配备精选的100题练习。

• 动词不定式的解析及运用