用be able to的形式写作文I was able to read fables 5 years ago.I am able to understand the lessons of the fables now.I will be able to teach them to children in 10 years.仿照这篇,写一个关于音乐的

用be able to的形式写作文I was able to read fables 5 years ago.I am able to understand the lessons of the fables now.I will be able to teach them to children in 10 years.仿照这篇,写一个关于音乐的 I imagine sb.to be able to do sth.为什么这里是 to be able 的形式? be able to的现在完成时形式为_________able to? “I am able to play the piano”中用了be able to词组,to之后的动词为什么不用动名词（v+ing)的形式? I will be able to为什么要用be而非I will am able to i don't konw (w ) i will be able to come or not 用所给词的适当形式填空 I'm afraid he____(not be)able to play basket in three months I'll be able to finish this essay ___(easy） in half an hour .（适当的形式填空） be able to 否定形式是什么? not be able to =be unable to? 这个词组的否定形式是什么 be able to 和will be able to 的区别 be able to 的用法 be able to的用法 be able to的词性 be able to的用法 be able to 的用法 be able to 的意义 用be able to造句