Everyone can use a little practice... :)
https://www.nytimes.com/games/wordle/index.html (Wordle)
http://esl.fis.edu/grammar/multi/satzType.htm (Sentence Structure)
https://www.education.com/games/fifth-grade/grammar/ (All types of grammar games)
http://www.myschoolhouse.com/courses/O/1/55.asp (Subject and Predicate lesson)
http://www.vocabulary.co.il/analogies/middle-school/6th-8th-grade-analogy-types/ (Vocabulary games)
http://www.dailygrammar.com/archive.html (Grammar Lessons: click on Parts of Speech or Parts of Sentence)
http://www.eduplace.com/kids/hme/6_8/grammar/ (Practice 8th grade skills)
http://www.eduplace.com/cgi-bin/hme-quiz-start.cgi?Grade=6&Unit=7&Topic=Prepositional+Phrases&x=25&y=9 (Prep phrases)
https://mrnussbaum.com/incredible-word-scramble (Word Scramble)