First of all, improve your listening, of course, by listening and reading more. You can give your child more listening parts of the test paper. If you don't understand it once, you can listen to it twice or three times ... if you listen to it a few times more, you will definitely get something.
Read English aloud, insist that children read an English article every day, and correct any incorrect pronunciation in time. Because my own English level is not very good, I am afraid of delaying my children's English learning. Later, I sent my children to the nearby Ming Normal Education College to learn English. I enrolled my child in the oral class of 331. During the time when the child was studying there, I could feel that she was very happy and liked English more and more. Listening and speaking have also improved, and the accent is much more standard.
Also, English in the fourth grade of primary school is not difficult to learn, so it is enough to tutor children more.