I am finding that I have to sets of students: those who are acing the whole grammar idea and those who struggle. I plan to continue working with grammar until the strugglers are acing basic grammar, too. So if you are an ACER, you may want to pull aside a STRUGGLER and help him.
Today we reviewed the concepts of SUBJECT/PREDICATE. (See Parts of a SENTENCE Prezi on the Grammar page of this website.) This website may help you, too.
Have a great day!