I am (able的什么形式) to cycle to school because my bicycle is broken

I am (able的什么形式) to cycle to school because my bicycle is broken “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? 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? am是I的什么形式 I copy that .I am not able to have的汉语意思 I am sorry that I () able to phone you yesterday. I will be able to为什么要用be而非I will am able to I’d like to go with you,but with so much work to do this afternoon I’m __to请问空格里填able的什什么形式? i will help you if i _______ A.am able B.will be able C.can be able to D.am able to I am able to protect you and be fond of Sorry,I am not able to answer everything. I am able to draw 这句话对吗?She is able to sing ,what I am looking forward to is nothing else but_后加动词的什么形式/ 翻译为汉语,要准确一点的哦I am to be able to not be keen on yours I'll be able to dress more casually.和I'll am able to dress more casually.哪个对?. are you able to ……怎么回答,可以用I am (able to )吗?还是只能用 I can ? LI Ming said he able to speak English very well问号格中应填BE的什么形式