Describe your experience learning a foreign language

It is a good opportunity for a foreign student to express his experience about learning a foreign language. My native language is Chinese and Taiwanese. Therefore, it is really a tough challenge for me to speak and to write English in my childhood. However, it is not difficult for me to pronounce English when I fully understand the English pronogram. Addition, I can try to use the Chinese pronounce to simulate the English word. But it has another problem for me to communite in English that I can not remember all the vocabulary. In hence, I just can use some simple and easy understanding vocabulary to express my ideas or thoughts to other people. Beside the speaking ability, English has another grammar system and writing stlyle. In other words, I have to learn the tense of the grammar and rhetoric in English writing. This two parts are the most difficult part for me. We don't have to use this in my mother language.
I feel very confident interacting with native speakers in our school right now, and it is the reason I choose to study in the US. I want to practice English and to improve my English ability.