To learn English well is very useful 保持原意 怎么该?

问题描述:

To learn English well is very useful 保持原意 怎么该?

___ ___ very useful ___ learn English well. It is very useful to learn English well . It is to It is very useful to

it's very usefull to learn english well

It is very useful to learn English well

Learning English well is very useful
原句是动词不定式做主语,改动后的句子就变成了动名词做主语。意思完全不变