我想要环游世界，所以我一定要学好英语。

I want to travel around the world. So I must learn English well.

youdao

因此，为了在工作上做的更加顺利，我一定要学好英语。

Therefore, in order to do better in my work, I must learn English well.

youdao

我一直坚信如果想学好英语就一定要多听多说，因为语言的目的就是为了交流，不是吗？

I believe that if you wanna speak English well you must listen more and say it out first.

youdao

从那时候开始，我发誓我一定要把英语学好！

I swore I must learn English well from then on.

youdao

从那时候开始，我发誓我一定要把英语学好！

I swore I must learn English well from then on.

youdao