I learnt it by myself.

我自学的。

youdao

Nobody taught me, I learnt it by myself.

没有人教过我，我自己学会的。

youdao

There is something that we haven't learnt before, so I had to learn it by myself.

有一些要考的东我们还没学，所以只好自学了。

youdao

There is something that we haven't learnt before, so I had to learn it by myself.

有一些要考的东我们还没学，所以只好自学了。

youdao