I am not good at English grammar
I am not good at English grammar,so when I say something in English I always afraid of my grammatical mistakes.
I try too read some books about English grammar,but I think they are all very complex and hard to learn by heart.

Question

I am not good at  English grammar
     I am not good at English grammar,so when I  say something in English I always afraid of  my grammatical  mistakes.
     I try too read some books about English grammar,but I think they are all very complex and hard to  learn by heart.

Answer

Try learning whole phrases without worrying about the grammar.  Look for good examples of English and copy them.  You can study the grammar later, after you have memorised useful key phrases.

If you study the grammar too closely, you end up analysing the language instead of actually using it.

Nie przegap okazji, by nauczyć się języka w zaciszu własnego domu. Przejrzyj naszą ofertę doświadczonych korepetytorów i zapisz się na pierwszą lekcję już teraz!