All I have to do is learn English.这句话语法对吗?

All I have to do is learn English.这句话语法对吗?
All I have to do is learn English.这句话语法对吗?

All I have to do is learn English.这句话语法对吗?
不对 应该是all that i have to do is to learn english.
这个句子中你是要让all（all that）做do的宾语 所以要用what 而all that=what
其次 is 后面应该接不定式或者ing形式

to learn还有我觉得应该是ALL that I need to do

It's not right.
The right sentense is:
All (that) I have to do is to learn English.