Just as I said in the title, I'm wondering if there is a good book which covers basic syntax overall. I've been learning English for fairly a long time, so I don't have a lot of problems holding daily conversations and understanding many parts of books or articles written in English.
But the thing is I haven't learned grammar in depth, because I didn't realize the importance of it when I was younger. I was kind of exposed to English content when I was a kid although I grew up in a non-English speaking country, so I could just tell which makes sense and which does not, without knowing why.
So when I have to write something "professional" in English, or want to read a novel which has complicated structured sentences in English, there are some times when I cannot fully express what I want to say or understand the meaning or structure of some sentences.
I'm currently re-learning English grammar using GIU Intermediate and Advanced simultaneously, which are really helpful for me, but they do not seem to tackle syntax very much. So I thought it'd be better to have a book that covers syntax and basic structures of sentences so that I can refer to and improve my knowledge in English overall.