all i have to do is learn english.为什么不是all i have to do is learning english

all i have to do is learn english.为什么不是all i have to do is learning english
all i have to do is learn english.为什么不是all i have to do is learning english

all i have to do is learn english.为什么不是all i have to do is learning english
此句采用了不定式的省略语法：如果主语中含有行为动词do及其变化形式did/does/done等时,则做表语的不定式符号to一般省略.
完整句子为：All I have to do is (to) learn English.
该句表语to learn English为不定式,前面的主语中含有do,所以省略to.
用动名词短语learning English从句子结构上看无错,但是该句表语的动作learn English在当时尚未发生,所以用不定式to learn English更好.

应该是all i have to do is to learn english

就是be do sth 跟 be doing sth的区别 一个是一直在做某事，一个是将要去，多看看语法书、、、

这是从哪找到的啊，你没有看错吗？我觉得应该是后者啊