I’ve been brushing up my grammar skills using this skill builder book.
While they seem to think this will only take four weeks and that learning will occur quickly and easily, I took much longer than that, because I wasn’t working every day, and also because I also made a ton of flash cards to help me memorize all the grammar terms.
Unfortunately, you can see from pre- and posttest results that I improved by a little less than 3 percent. I can say though, that during the posttest I was much more familiar with the terms rather than taking a by-ear guess.
Onto my next learning journey: verb tenses.