realizethatmyscoreinthisEnglishtestistoobadandmygradedecreasedalot.Thus,Ineedtoworkhardinfuture.Imakeaplantodothefollowingthings.Iwillreadourtextbookforlongertimethanbefore,andIwilldomorepracticequestions.IfIhavesomequestions,Iwillaskmyteacherrightaway.Also,Iwilllistentothelecturemuchmorecarefully,andworkharderonourhomework.AndIwillpreviewand/orreviewourtextbookforatleast30minuteseverydayafterIfinishmyhomework.IpromisethatmygradewillincreaseafterImaketheseefforts.Workhard!

　　这次英语考试成绩不太好,成绩下降了许多,所以的努力了,要多看书,多做试题,不懂得就要问老师,上课一定要专心听课,认真完成作业,每天放学做完作业后,要看至少30分钟的书,下次一定要把成绩提上去,多多努力

　　PS:可以适当加一些关于暑假之类的字眼