I learned English through studying with my friends. (一般过去时）
I'm learning English through studying with my friends. (现在进行时）
如果你已经结束了英语的学习，就用一般过去时，如果还在学就用现在进行时。
I am to pass a study with friend to study of.
“我是通过和朋友一起学习来学习的。”
翻译成英语是: I study by studying with my friends .
分析：
根据句意用一般现在时
主语：我 I
谓语：学习 study
状语：通过和朋友一起学习 by studying with my friends
（另外： 介词by 后的动词要用ing 形式；with 和……一起 ）
I have learnt a lot from cooperative learning with my friends.
I study with my friends.
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