My Quection Question

All of my friends, how are you?
Last week, one of my foreign friends told me the factor reason why I can't learn English well [1]. The factor reason, what I have kept on searching for, is that the way I learn English. My friend told to me that I couldn't shouldn't use Chinese, but English, to learn English. To be honest, I couldn't don't know what his he means is exactly.
If anyone knows, can you tell me?

----

[1] The phrase "why I can't learn English well" sounds unusual.  It's correct, but it sounds unusual.  A more natural phrase is "why I have difficulty learning English".

----

Why don't you ask your friend what he means, and what he recommends?

I believe your friend means that you are thinking in Chinese, and learning using Chinese resources.  You are learning English as though it were a strange dialect of Chinese.

Let me give you an example.  Imagine that you read an unknown English word, such as "classified".  How do you learn this new word?  You have two options.

The first option is to go to Baidu and type in something like this: "classified"有什么意思？ Baidu may link you to various pages, written in Chinese, talking about the English word 'classified'.  This is a problem.  For one thing, the author may provide only one meaning of the word, when it has several.  For another, the author will likely use Chinese words to explain this English word.  This means the explanation is only approximate, and may in fact be quite wrong.

The second option is to go to Google (or a permitted English search engine), and type: definition of classified.  Now you will learn the meaning of 'classified' from native English speakers, using English grammar and English examples.

Can you see the difference?  You can use Chinese to learn English, or you can use English to learn English.  (This applies not only to websites, but also to books, videos, and classes.)

For a new Chinese student learning English, he or she must use Chinese to learn their first words in English.  But once he or she has reached an intermediate level of English, the student should start using English to learn English.  There will be times when the student must revert to using Chinese to learn English, but those times should become fewer and fewer.